用所给词的适当形式填空。(共10个空格;每空1分,满分10分):

1. The teacher can answer the questions_________(easy)。

2. Wei Hua_________(meet) Yang Ling on River Road this morning.

3. Some_________(child) run or play on the road.

4. Let’s finish_________(they) quickly.

5. What must Liu Tao_________(do) in the library?

6. We should keep_________(health)。

7. You must stay_________(safe) on the road and cross it_________(safe)。

8. You mustn’t run_________ (quick) on the road.

9. The bus is_________(stop) on the road.