Mark the letter A, B, C, or D to indicate the word whose underlined part (shown in bold) differs from the other three in pronunciation in each of the following questions from 1 to 2.
Question 1.
Mark the letter A, B, C, or D to indicate the word whose underlined part (shown in bold) differs from the other three in pronunciation in each of the following questions from 1 to 2.
Question 2.
Mark the letter A, B, C, or D to indicate the word that differs from the other three in the position of primary stress in each of the following questions from 3 to 4.
Question 3.
Mark the letter A, B, C, or D to indicate the word that differs from the other three in the position of primary stress in each of the following questions from 3 to 4.
Question 4.
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Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions from 5 to 14.
Question 5. This ancient temple is very fragile. It ____ carefully to avoid any damage.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions from 5 to 14.
Question 6. If we ____ ecotourism, we will help local communities and protect the environment.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions from 5 to 14.
Question 7. If I were you, I ____ for that scholarship to study abroad.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions from 5 to 14.
Question 8. Our teacher said that gender equality ____ everyone to have the same opportunities in life.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions from 5 to 14.
Question 9. She asked me where I ____ my last holiday.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions from 5 to 14.
Question 10. The woman ____ is talking to our teacher is a famous environmentalist.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions from 5 to 14.
Question 11. Ha Long Bay, ____ is a UNESCO World Heritage Site, attracts millions of tourists every year.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions from 5 to 14.
Question 12. Ecotourists enjoy activities that have a low ____ on the environment.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions from 5 to 14.
Question 13. Lan: "Let's organize a campaign to raise awareness about gender equality." - Nam: "____"
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Mark the letter A, B, C, or D to indicate the correct answer to each of the following questions from 5 to 14.
Question 14. Peter: "Could you show me how to use this learning app?" - Mary: "____"
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 15 to 19.
Hi Linh,
How are you? For our science project, our group has chosen the topic of vertical gardens. It's a really fascinating concept!
A vertical garden is basically a way of growing plants on a vertically suspended panel, (15) ____ can be attached to a wall, either indoors or outdoors. This method is perfect for urban areas where ground space is limited. It allows people to grow fresh vegetables, herbs, and flowers even in small apartments.
What do you think?
Best,
Mai
Question 15.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 15 to 19.
Hi Linh,
How are you? For our science project, our group has chosen the topic of vertical gardens. It's a really fascinating concept!
A vertical garden is basically a way of growing plants on a vertically suspended panel, (15) ____ can be attached to a wall, either indoors or outdoors. This method is perfect for urban areas where ground space is limited. It allows people to grow fresh vegetables, herbs, and flowers even in small apartments.
What do you think?
Best,
Mai
Question 16.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 15 to 19.
Hi Linh,
How are you? For our science project, our group has chosen the topic of vertical gardens. It's a really fascinating concept!
A vertical garden is basically a way of growing plants on a vertically suspended panel, (15) ____ can be attached to a wall, either indoors or outdoors. This method is perfect for urban areas where ground space is limited. It allows people to grow fresh vegetables, herbs, and flowers even in small apartments.
What do you think?
Best,
Mai
Question 17.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 15 to 19.
Hi Linh,
How are you? For our science project, our group has chosen the topic of vertical gardens. It's a really fascinating concept!
A vertical garden is basically a way of growing plants on a vertically suspended panel, (15) ____ can be attached to a wall, either indoors or outdoors. This method is perfect for urban areas where ground space is limited. It allows people to grow fresh vegetables, herbs, and flowers even in small apartments.
What do you think?
Best,
Mai
Question 18.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase that best fits each of the numbered blanks from 15 to 19.
Hi Linh,
How are you? For our science project, our group has chosen the topic of vertical gardens. It's a really fascinating concept!
A vertical garden is basically a way of growing plants on a vertically suspended panel, (15) ____ can be attached to a wall, either indoors or outdoors. This method is perfect for urban areas where ground space is limited. It allows people to grow fresh vegetables, herbs, and flowers even in small apartments.
What do you think?
Best,
Mai
Question 19.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Read the following passage and decide whether each of the statements from 20 to 24 is True (T) or False (F).
Sea turtles are large, air-breathing reptiles that inhabit tropical and subtropical ocean waters throughout the world. Their shells consist of an upper part (carapace) and a lower part (plastron). For most species, it is the streamlined carapace and their large flippers that make them remarkably adapted for life at sea. However, they must still come to the surface to breathe air.
One of the most fascinating aspects of sea turtle biology is their long-distance migration. Many species travel thousands of kilometers between their feeding grounds and the beaches where they nest. Female turtles return to the same beaches where they were born to lay their own eggs, a remarkable feat of navigation.
Unfortunately, nearly all species of sea turtles are now classified as endangered. They face numerous threats from human activities. These include being accidentally caught in fishing nets, ocean pollution like plastic bags which they mistake for food, and the destruction of their nesting habitats. Conservation efforts are crucial to ensure these ancient mariners survive for future generations.
Question 20. Sea turtles are a type of mammal that lives in the ocean.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Read the following passage and decide whether each of the statements from 20 to 24 is True (T) or False (F).
Sea turtles are large, air-breathing reptiles that inhabit tropical and subtropical ocean waters throughout the world. Their shells consist of an upper part (carapace) and a lower part (plastron). For most species, it is the streamlined carapace and their large flippers that make them remarkably adapted for life at sea. However, they must still come to the surface to breathe air.
One of the most fascinating aspects of sea turtle biology is their long-distance migration. Many species travel thousands of kilometers between their feeding grounds and the beaches where they nest. Female turtles return to the same beaches where they were born to lay their own eggs, a remarkable feat of navigation.
Unfortunately, nearly all species of sea turtles are now classified as endangered. They face numerous threats from human activities. These include being accidentally caught in fishing nets, ocean pollution like plastic bags which they mistake for food, and the destruction of their nesting habitats. Conservation efforts are crucial to ensure these ancient mariners survive for future generations.
Question 21. Sea turtles often migrate over very long distances.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Read the following passage and decide whether each of the statements from 20 to 24 is True (T) or False (F).
Sea turtles are large, air-breathing reptiles that inhabit tropical and subtropical ocean waters throughout the world. Their shells consist of an upper part (carapace) and a lower part (plastron). For most species, it is the streamlined carapace and their large flippers that make them remarkably adapted for life at sea. However, they must still come to the surface to breathe air.
One of the most fascinating aspects of sea turtle biology is their long-distance migration. Many species travel thousands of kilometers between their feeding grounds and the beaches where they nest. Female turtles return to the same beaches where they were born to lay their own eggs, a remarkable feat of navigation.
Unfortunately, nearly all species of sea turtles are now classified as endangered. They face numerous threats from human activities. These include being accidentally caught in fishing nets, ocean pollution like plastic bags which they mistake for food, and the destruction of their nesting habitats. Conservation efforts are crucial to ensure these ancient mariners survive for future generations.
Question 22. Plastic bags are not dangerous to sea turtles because they can easily digest them.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Read the following passage and decide whether each of the statements from 20 to 24 is True (T) or False (F).
Sea turtles are large, air-breathing reptiles that inhabit tropical and subtropical ocean waters throughout the world. Their shells consist of an upper part (carapace) and a lower part (plastron). For most species, it is the streamlined carapace and their large flippers that make them remarkably adapted for life at sea. However, they must still come to the surface to breathe air.
One of the most fascinating aspects of sea turtle biology is their long-distance migration. Many species travel thousands of kilometers between their feeding grounds and the beaches where they nest. Female turtles return to the same beaches where they were born to lay their own eggs, a remarkable feat of navigation.
Unfortunately, nearly all species of sea turtles are now classified as endangered. They face numerous threats from human activities. These include being accidentally caught in fishing nets, ocean pollution like plastic bags which they mistake for food, and the destruction of their nesting habitats. Conservation efforts are crucial to ensure these ancient mariners survive for future generations.
Question 23. Female sea turtles lay their eggs in the water.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Read the following passage and decide whether each of the statements from 20 to 24 is True (T) or False (F).
Sea turtles are large, air-breathing reptiles that inhabit tropical and subtropical ocean waters throughout the world. Their shells consist of an upper part (carapace) and a lower part (plastron). For most species, it is the streamlined carapace and their large flippers that make them remarkably adapted for life at sea. However, they must still come to the surface to breathe air.
One of the most fascinating aspects of sea turtle biology is their long-distance migration. Many species travel thousands of kilometers between their feeding grounds and the beaches where they nest. Female turtles return to the same beaches where they were born to lay their own eggs, a remarkable feat of navigation.
Unfortunately, nearly all species of sea turtles are now classified as endangered. They face numerous threats from human activities. These include being accidentally caught in fishing nets, ocean pollution like plastic bags which they mistake for food, and the destruction of their nesting habitats. Conservation efforts are crucial to ensure these ancient mariners survive for future generations.
Question 24. Most sea turtle species are considered to be in danger of extinction.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions from 25 to 30.
The widespread use of electronic devices like smartphones and laptops before bed makes the problem worse. The blue light emitted from these screens can suppress the production of melatonin, the hormone that helps regulate sleep, making it even harder for teenagers to fall asleep.
Some experts and school districts have recognized this issue and are advocating for later school start times. Studies have shown that when schools start later, students get more sleep, attendance improves, and academic performance goes up. It is a change that acknowledges the biology of teenagers and supports their journey to becoming healthy, well-rested adults.
Question 25. What is the main idea of the passage?
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions from 25 to 30.
The widespread use of electronic devices like smartphones and laptops before bed makes the problem worse. The blue light emitted from these screens can suppress the production of melatonin, the hormone that helps regulate sleep, making it even harder for teenagers to fall asleep.
Some experts and school districts have recognized this issue and are advocating for later school start times. Studies have shown that when schools start later, students get more sleep, attendance improves, and academic performance goes up. It is a change that acknowledges the biology of teenagers and supports their journey to becoming healthy, well-rested adults.
Question 26. According to the passage, why do teenagers naturally feel sleepy later at night?
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions from 25 to 30.
The widespread use of electronic devices like smartphones and laptops before bed makes the problem worse. The blue light emitted from these screens can suppress the production of melatonin, the hormone that helps regulate sleep, making it even harder for teenagers to fall asleep.
Some experts and school districts have recognized this issue and are advocating for later school start times. Studies have shown that when schools start later, students get more sleep, attendance improves, and academic performance goes up. It is a change that acknowledges the biology of teenagers and supports their journey to becoming healthy, well-rested adults.
Question 27. The word "detrimental" in paragraph 2 is closest in meaning to ____.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions from 25 to 30.
The widespread use of electronic devices like smartphones and laptops before bed makes the problem worse. The blue light emitted from these screens can suppress the production of melatonin, the hormone that helps regulate sleep, making it even harder for teenagers to fall asleep.
Some experts and school districts have recognized this issue and are advocating for later school start times. Studies have shown that when schools start later, students get more sleep, attendance improves, and academic performance goes up. It is a change that acknowledges the biology of teenagers and supports their journey to becoming healthy, well-rested adults.
Question 28. The word "it" in paragraph 2 refers to ____.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions from 25 to 30.
The widespread use of electronic devices like smartphones and laptops before bed makes the problem worse. The blue light emitted from these screens can suppress the production of melatonin, the hormone that helps regulate sleep, making it even harder for teenagers to fall asleep.
Some experts and school districts have recognized this issue and are advocating for later school start times. Studies have shown that when schools start later, students get more sleep, attendance improves, and academic performance goes up. It is a change that acknowledges the biology of teenagers and supports their journey to becoming healthy, well-rested adults.
Question 29. Which of the following is NOT mentioned as a consequence of sleep deprivation for teens?
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Read the following passage and mark the letter A, B, C, or D to indicate the correct answer to each of the questions from 25 to 30.
The widespread use of electronic devices like smartphones and laptops before bed makes the problem worse. The blue light emitted from these screens can suppress the production of melatonin, the hormone that helps regulate sleep, making it even harder for teenagers to fall asleep.
Some experts and school districts have recognized this issue and are advocating for later school start times. Studies have shown that when schools start later, students get more sleep, attendance improves, and academic performance goes up. It is a change that acknowledges the biology of teenagers and supports their journey to becoming healthy, well-rested adults.
Question 30. What can be inferred from the passage about school start times?
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Mark the letter A, B, C, or D to indicate the sentence that is CLOSEST in meaning to each of the following questions from 31 to 35.
Question 31. They must preserve these historical sites for future generations.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Mark the letter A, B, C, or D to indicate the sentence that is CLOSEST in meaning to each of the following questions from 31 to 35.
Question 32. "If you don't hurry, you will miss the bus," my mom said.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Mark the letter A, B, C, or D to indicate the sentence that is CLOSEST in meaning to each of the following questions from 31 to 35.
Question 33. I can't give you advice because I don't know the full story.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Mark the letter A, B, C, or D to indicate the sentence that is CLOSEST in meaning to each of the following questions from 31 to 35.
Question 34. "Where did you buy this book?" Lan asked me.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Mark the letter A, B, C, or D to indicate the sentence that is CLOSEST in meaning to each of the following questions from 31 to 35.
Question 35. My brother is an engineer. He works for a large technology company.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Mark the letter A, B, C, or D to indicate the sentence that best COMBINES each pair of sentences, or the correct sentence made from the given cues, in each of the following questions from 36 to 40.
Question 36. The hotel was very comfortable. We stayed there last summer.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Mark the letter A, B, C, or D to indicate the sentence that best COMBINES each pair of sentences, or the correct sentence made from the given cues, in each of the following questions from 36 to 40.
Question 37. You should study harder. You will fail the exam.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Mark the letter A, B, C, or D to indicate the sentence that best COMBINES each pair of sentences, or the correct sentence made from the given cues, in each of the following questions from 36 to 40.
Question 38. If / I / have / enough money / I / buy / a new laptop.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Mark the letter A, B, C, or D to indicate the sentence that best COMBINES each pair of sentences, or the correct sentence made from the given cues, in each of the following questions from 36 to 40.
Question 39. He passed the final exam with a high score. This made his parents very proud.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
Mark the letter A, B, C, or D to indicate the sentence that best COMBINES each pair of sentences, or the correct sentence made from the given cues, in each of the following questions from 36 to 40.
Question 40. The students / ask / their teacher / what / they / should / prepare / for the trip.
Đăng ký miễn phí để làm cả 40 câu, AI chấm và phân tích ngay.
(16) ____, these gardens offer significant environmental benefits. They help to (17) ____ air pollution by filtering pollutants and producing oxygen. They also improve a building's insulation, which can reduce energy costs for heating and cooling. Our teacher said that these gardens (18) ____ be installed almost anywhere with a bit of creativity. I think it’s a really (19) ____ way to bring more green into our cities and learn about biology firsthand.
(16) ____, these gardens offer significant environmental benefits. They help to (17) ____ air pollution by filtering pollutants and producing oxygen. They also improve a building's insulation, which can reduce energy costs for heating and cooling. Our teacher said that these gardens (18) ____ be installed almost anywhere with a bit of creativity. I think it’s a really (19) ____ way to bring more green into our cities and learn about biology firsthand.
(16) ____, these gardens offer significant environmental benefits. They help to (17) ____ air pollution by filtering pollutants and producing oxygen. They also improve a building's insulation, which can reduce energy costs for heating and cooling. Our teacher said that these gardens (18) ____ be installed almost anywhere with a bit of creativity. I think it’s a really (19) ____ way to bring more green into our cities and learn about biology firsthand.
(16) ____, these gardens offer significant environmental benefits. They help to (17) ____ air pollution by filtering pollutants and producing oxygen. They also improve a building's insulation, which can reduce energy costs for heating and cooling. Our teacher said that these gardens (18) ____ be installed almost anywhere with a bit of creativity. I think it’s a really (19) ____ way to bring more green into our cities and learn about biology firsthand.
(16) ____, these gardens offer significant environmental benefits. They help to (17) ____ air pollution by filtering pollutants and producing oxygen. They also improve a building's insulation, which can reduce energy costs for heating and cooling. Our teacher said that these gardens (18) ____ be installed almost anywhere with a bit of creativity. I think it’s a really (19) ____ way to bring more green into our cities and learn about biology firsthand.
Why are teenagers always so tired? It's a common complaint from parents, but the reason isn't just laziness or staying up late to play video games. The truth lies in the unique biology of the adolescent brain. During the teenage years, the body's internal clock, or circadian rhythm, naturally shifts. This means that teenagers feel sleepy later at night, often not until 11 p.m. or even later, and consequently, they need to wake up later in the morning.
This biological shift clashes with the early start times of most high schools. When teens are forced to wake up at 6 a.m. to get ready for school, they miss out on crucial hours of sleep. This lack of sleep is not just a minor inconvenience; it has detrimental effects on their academic performance, mental health, and physical well-being. A sleep-deprived teenager will find it harder to concentrate in class, solve problems, and retain new information. They are also more prone to feelings of sadness and anxiety.
Why are teenagers always so tired? It's a common complaint from parents, but the reason isn't just laziness or staying up late to play video games. The truth lies in the unique biology of the adolescent brain. During the teenage years, the body's internal clock, or circadian rhythm, naturally shifts. This means that teenagers feel sleepy later at night, often not until 11 p.m. or even later, and consequently, they need to wake up later in the morning.
This biological shift clashes with the early start times of most high schools. When teens are forced to wake up at 6 a.m. to get ready for school, they miss out on crucial hours of sleep. This lack of sleep is not just a minor inconvenience; it has detrimental effects on their academic performance, mental health, and physical well-being. A sleep-deprived teenager will find it harder to concentrate in class, solve problems, and retain new information. They are also more prone to feelings of sadness and anxiety.
Why are teenagers always so tired? It's a common complaint from parents, but the reason isn't just laziness or staying up late to play video games. The truth lies in the unique biology of the adolescent brain. During the teenage years, the body's internal clock, or circadian rhythm, naturally shifts. This means that teenagers feel sleepy later at night, often not until 11 p.m. or even later, and consequently, they need to wake up later in the morning.
This biological shift clashes with the early start times of most high schools. When teens are forced to wake up at 6 a.m. to get ready for school, they miss out on crucial hours of sleep. This lack of sleep is not just a minor inconvenience; it has detrimental effects on their academic performance, mental health, and physical well-being. A sleep-deprived teenager will find it harder to concentrate in class, solve problems, and retain new information. They are also more prone to feelings of sadness and anxiety.
Why are teenagers always so tired? It's a common complaint from parents, but the reason isn't just laziness or staying up late to play video games. The truth lies in the unique biology of the adolescent brain. During the teenage years, the body's internal clock, or circadian rhythm, naturally shifts. This means that teenagers feel sleepy later at night, often not until 11 p.m. or even later, and consequently, they need to wake up later in the morning.
This biological shift clashes with the early start times of most high schools. When teens are forced to wake up at 6 a.m. to get ready for school, they miss out on crucial hours of sleep. This lack of sleep is not just a minor inconvenience; it has detrimental effects on their academic performance, mental health, and physical well-being. A sleep-deprived teenager will find it harder to concentrate in class, solve problems, and retain new information. They are also more prone to feelings of sadness and anxiety.
Why are teenagers always so tired? It's a common complaint from parents, but the reason isn't just laziness or staying up late to play video games. The truth lies in the unique biology of the adolescent brain. During the teenage years, the body's internal clock, or circadian rhythm, naturally shifts. This means that teenagers feel sleepy later at night, often not until 11 p.m. or even later, and consequently, they need to wake up later in the morning.
This biological shift clashes with the early start times of most high schools. When teens are forced to wake up at 6 a.m. to get ready for school, they miss out on crucial hours of sleep. This lack of sleep is not just a minor inconvenience; it has detrimental effects on their academic performance, mental health, and physical well-being. A sleep-deprived teenager will find it harder to concentrate in class, solve problems, and retain new information. They are also more prone to feelings of sadness and anxiety.
Why are teenagers always so tired? It's a common complaint from parents, but the reason isn't just laziness or staying up late to play video games. The truth lies in the unique biology of the adolescent brain. During the teenage years, the body's internal clock, or circadian rhythm, naturally shifts. This means that teenagers feel sleepy later at night, often not until 11 p.m. or even later, and consequently, they need to wake up later in the morning.
This biological shift clashes with the early start times of most high schools. When teens are forced to wake up at 6 a.m. to get ready for school, they miss out on crucial hours of sleep. This lack of sleep is not just a minor inconvenience; it has detrimental effects on their academic performance, mental health, and physical well-being. A sleep-deprived teenager will find it harder to concentrate in class, solve problems, and retain new information. They are also more prone to feelings of sadness and anxiety.