用can， may， could， must， need， shall， will的适当形式填空并指出用法｡
1. Bring your raincoat, please. It ________ rain later.
2. It was so hot last Monday. I ________ (not) get to sleep.
3. This ________ (not) be a woman’s handkerchief. It ________ be a man’s.
4. Listen to me, boys! You ________ (not) write it down in the book.
5. —Must I finish the homework before the class?
—No, you ________ (not).
6. You ________ be ill. You look pale.
7. Please read it loudly. I ________ hardly hear you.
8. —________ I go swimming this afternoon, Mom?
—No, it is too cold to have a swim today.
9. —________ I clean the windows now, Li Fang?
—Please do.
10. I ________ let you have the book as soon as I finish it.