1. I do my homework every morning.
2. Does he know that policeman?
3. You must hand in me your homework by tomorrow. (人稱代詞應該在動作和物之間)
4. He told me yesterday that he would learn French.
5. I went there three times, but hasn't met the boss.
6. Will he come back tomorrow?
7. I'm calling his secretary.
8. When I asked him yesterday, he was on a meeting.
9. The meeting was over by 8 o'clock this morning.