D.
1. F
2. T
3. F
4. T
A.
1. They failed the exam because they were lazy.
2. Hai is the most intelligent in this class.
3. Hai has been learning English for 10 years.
4. She's interested in watching sports programmes.
5. In the future, robots will be able to do all of our work.
6. If you don't work hard, you won't pass the exam.
7. If we don't reduce the use of electricity, we'll have to pay more this month.
8. She might not find our place.
9. There are a lot of cafes, restaurants and museums in the Old Town.
10. If there is noise pollution, people and animals will have hearing problems.
B.
1. What is your father going to do this weekend?
2. If people cycle more, there will be less air pollution.
