暑期夏令营里来自中、英两国的小朋友面对下列题目各自有不同的麻烦，你来帮助他们写出合适的单词吧!

1. They are __________(搜查) the forest for the missing boy.

2. Daniel is the most ____________(勤勉的) boy.

3. Mr Green closed the door _________ and left, so nobody noticed him.

4. It is so dark at night that we cannot see ___________(任何人).

5. You can borrow books from the school library ,but you should _________them on time.

6. The bats(蝙蝠) always sleep in the __________and go out for food at night.

7. His grandfather _________(死) five years ago.

8. Would you like to __________ on the moon some day?

9. Look! A snake is moving towards us . It is very__________ .

10. When you leave , you should _________ to turn off the lights.

型钢轧制时，为什么有“耳子”出现？