1 . If you have any questions, don’t_________(犹豫) to ask me.

2 . 不要害怕犯错。

3 . Do not u_______ (从事) exercise for a few hours after a meal to allow food to digest. (根据中英文提示单词拼写)

4 . 不在房间的时候别让灯开着。（when）

5 . Don’t h______ (犹豫) to ask me if you have any questions.

6 . 选词填空

1. It is difficult to ____________ when an earthquake will happen.
2. The prices of the toys __________ between 5 yuan and 300 yuan.
3. The test will ___________ answering questions about photography.
4. The hall is big enough to ______________ 400 people.
5. Don't __________ ! There is no danger.