用how to, what to, where to, which to, wh
题型：填空题
问题：
用how to, what to, where to, which to, when to填空。
1. I don't know __________ have for lunch.
2. Everybody knows __________ use a computer.
3. Can you tell me ___________ put the coats?
4. You need to decide __________ choose, the black one or the red one?
5. You should know __________ keep quiet.
