1 . ________ you tell me what has happened?

A．May

B．Must

C．Can

D．Could

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

A．need

B．can

C．must

D．should

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

A．can’t

B．needn’t

C．shouldn’t

D．mustn’t

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

A．Can

B．Should

C．Must

D．Need

5 . My grandma ________ read or write. She didn’t go to school when she was young.

A．can

B．must

C．can’t

6 . Tom can’t play basketball on school days, but he ________ play it on weekends.

A．must

B．can

C．have to

D．should

7 . —         I use your computer, Dad?                    
—Yes, you can.

A．Must

B．Could

C．Would

D．Should

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