用不定式完成下列句子。
1. Have you decided ________ (怎样度假).
2. It is dangerous ________ (玩火).
3. She was the first woman ________ (环球飞行的).
4. The boy was made ________ (重复他自己的故事).
5. The old lady looked at the children ________ (穿过马路).
6. It took me much time ________ (算出这些难题) yesterday.
7. The boss made the workers ________ (一天工作十小时).
8. I don't know ________ (在会上说什么).
9. Can you tell me ________ (在哪里能买到这本书)?
10.________ (在何时何地召开这会议) hasn't been decided yet.