题目内容：

用括号内所给动词的适当形式填空，在答题卷相应的横线上填写答案。

1. My cousin always came first in the writing competition, but he never ________ (show) off.

2. Paul made a nice cage _______ (keep) the little sick bird until it could fly．

3. Nobody but the twins _______ (have) a computer for a long time.

4.The old couple _________ (drink) in the garden when I walked past it yesterday.

5. He spends more time than he used to ________ (play) games with children.

6.I can go to school on my own since I ________ (grow) up.

7. It will be quite dangerous to swim alone if you ________ (not be) careful enough.

8. ---Look! Someone _____________ (clean) the blackboard.

---Well, it wasn’t me. I didn’t do that.