3. 昨天这个时候那位妈妈正在为她的孩子准备晚餐。

That mother supper her child at this time yesterday.

2. 每个人都说他是出色的。但事实上，他是很普通的。

Everyone says he is excellent. But ，he is very common.

1. 人口的不断增长在许多国家是一个严重的问题。

An is a serious problem in many countries.

10. If people make less ( pollute) , the environment will get better.

9. My cup is (break) . I want to buy a new one this afternoon.

8. You had better keep the children from (swim) in the river. It's dangerous.

7. I don't think teenagers should be allowed (drive) a car.

6. —Do you know how (help) the sick boy?

一-We’d better send him to hospital.

5. Thank you very much for everything. It's a very (令人愉快的) evening.

4. My head teacher had a long (谈话) with me after school yesterday.