Ⅰ. 完成句子：根据句子意思,填入恰当的情态动词
1. Excuse me, I ask you some questions, Mr. Wang?
2. “Don’t play on the road. A passing car hit you.”
3. I go to bed before my mother came back.
4. you please tell me the way to the post office?
5. Everyone speak loudly in the library.
6. Old men be spoken to politely.
7. we meet at six in the afternoon?
8. I take your order?
9. — we go there together?
—No, you needn’t. You can go by yourself.
10. The bag be Lucy’s. There is her name on it.

can/may
may
couldn't
Could
mustn't/can't
should
Shall
May
Must
must