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.
