用括号内动词的适当形式填空。

1. The teacher asks us _____(listen) carefully in class.

2. The girl _____(use) to do some reading when she was a child.

3. The old man _____ (be) ill for three years.

4. If you _______ (not know) the answer, you’d better _____ (put) up hands.

5. Thank you for ______(give) me the presents.

6. How long ______ you ______(study) English?

7. One of the boys _______ (be) born in 1992.

8. Where is my pen?   My mother ______ (take) it away.

9. The interesting story made all of us ______(not keep)quiet in class.

10. I’m sorry I forgot _____ (give) the book back to you.