用括号中所给的动词的适当形式填空。

1. —What's the boy doing now?

    —He _____ (clean) the window.

2. It's time _____ (go) home. It's six o'clock. It's late.

3. Listen! Some girls _____ (sing). Let's go and join (加入) them.

4. You can get someone in the shop _____ (help) you buy something.

5. The traffic in this city _____ (be) very heavy.

6. _____ (not) break the traffic rules.

7. Could you tell me how _____ (get) to your home?

8. I _____ (not go )to bed until I finished my homework.

9. ____ you (make )a wish at your birthday party?

10. Linda , it's time for _____(have) breakfast.