8.I don’t know ________(在会上说什么).

you tell me ________(在哪里能买到这本书)?

7.The boss made the workers ________(一天工作十小时).

6.It took me much time ________(算出这些难题)yesterday.

5.The old lady looked at the children ________(穿过马路).

4.The boy was made ________(重复他自己的故事).

3.She was the first woman ________(环球飞行的).

2.It is dangerous ________(玩火).

1.Have you decided ________(怎样度假).

20. What about ___________(go) out for a walk?

19. We couldn’t help _________(laugh) after we heard the funny story.