一、用适当的情态动词填空，必要时可用否定式：
1. What ______ I do for you ?
2. ________ we have lunch before 11:45?
No, you needn’t.
3. The boy _________ skate well when he was six years old.
4. __________what he said be true?
5. －Tomorrow will be a fine day. _________ we go our for a picnic ?

    －That’s great.
6. How ________ you say I’m foolish ?
7. You __________ to have a good rest. It’s good for you.
8. You _________ not hurry.  There is enough time to go.
9. _______ the girl go out alone on a rainy night ?
10. －Is the man Professor Li ?

    －No, he ________ be Professor Li.  I know that Professor Li has gone to Beijing.