1 . I have a home robot. It ________ do all the housework.

A．need

B．can

C．must

D．should

2 . —Will you answer the phone, please?
—Sorry, I ________. I am busy now.

A．can’t

B．needn’t

C．shouldn’t

D．mustn’t

3 . I’m sorry. I _________ go now. My father told me on the phone that my mother was ill.

A．can

B．may

C．have to

D．need

4 . —Must I come at 7 o’clock?
—No, you needn’t. You ________ come a little later.

A．can

B．need

C．should

D．must

5 . —_________ your American friend eat with chopsticks?
—Yes, but he can’t use them well.

A．Can

B．Should

C．Must

D．Need

6 . — Mom, can I go out with Anna tonight?
— Sure, but you ________ come back home by 9:00.

A．can’t

B．needn’t

C．must

D．need

7 . Miss Li, ________ you please speak a little more loudly?

A．could

B．should

C．need

8 . — _________ you give me some advice about protecting the environment(保护环境)?
—Yes, I think it’s important to do garbage sorting(垃圾分类).

A．Can

B．Must

C．May

D．Need