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Ex1
3 There was a lot of noise from the street, so we had to close the window.
4 Karen can't stay for the whole meeting; she has to leave early.
5 How old do you have to be to drive in your country?
6 I don't have much time; I have to hurry.
7 How is Paul enjoying his new job? Does he have to travel a lot?
8 "I'm afraid I can't stay long." - "What time do you have to go?"
9 "The bus was late again." - "How long did you have to wait?"
10 There was nobody to help me. I had to do everything by myself.
Ex 4
3 I can stay in bed tomorrow morning because I don't have to go to work.
4 Whatever you do, you mustn't touch that switch. It's very dangerous.
5 There's a lift in the building, so we don't have to climb the stairs.
6 You mustn't forget what I told you. It's very important.
7 Sue doesn't have to get up early, but sheusually does.
8 Don't make so much noise. We mustn't wake the children.
9 I mustn't eat too much. I'm supposed to be on a diet.
10 You don't have to be a good player to enjoy a game oftennis.
The writer's opinion is that the lack of exercise in teenagers' lives is a serious problem, caused by spending too much time on electronic gadgets and being overweight.
(Ý kiến của người viết là việc thiếu tập thể dục trong cuộc sống của thanh thiếu niên là một vấn đề nghiêm trọng, gây ra bởi việc dành quá nhiều thời gian cho các thiết bị điện tử và thừa cân.)
The writer proposes two solutions:
(Người viết đề xuất hai giải pháp)
- Making sure school canteens only serve healthy food.
(Đảm bảo căng tin trường học chỉ phục vụ thức ăn lành mạnh.)
- Giving all teenagers free membership of their local sports facilities.
(Cho tất cả thanh thiếu niên trở thành thành viên miễn phí của các cơ sở thể thao địa phương.)
Câu 1. To keep fit, I usually do simple exercises such as walking, jogging, cycling, and sometimes playing badminton, these activities help me stay strong, active, and relaxed
Câu 2. To stay healthy, I usually eat more vegetables, fruit, eggs, fish, and rice, I also drink a lot of water, milk, and fresh juice, and I try to avoid too much fast food, soft drinks, and sweets
Câu 3. In cities of the future, people will probably travel by electric cars, high speed trains, smart buses, bicycles, and even self driving vehicles, these means of transport will be faster, safer, and more convenient
Câu 4. Cities of the future can be better for the environment by using clean energy, planting more trees, building green spaces, reducing pollution, and improving public transport so fewer people use private vehicles
Câu 5. We can reduce carbon emissions by using public transport, saving electricity, using renewable energy, planting trees, and driving less, these actions help protect the environment and slow down climate change
Câu 6. We can reduce waste by reusing things, recycling paper, plastic, and glass, using less plastic, buying only what we need, and throwing rubbish in the right place, this will make our environment cleaner and healthier