1 . — Could you go to the cinema to watch the film Fast and Furious 9 with me?
— No, I         . I          go home at once (立刻) after school.

A．mustn’t; must

B．can’t; must

C．can’t; may

D．needn’t; may

2 . —Will you go home for the Spring Festival?
—I ________. But I’m not sure.

A．might

B．can

C．must

D．need

3 . We couldn’t live ________ (没有) water, so we ________ (必须) make good use of it.

4 . ________ you tell me what has happened?

A．May

B．Must

C．Can

D．Could

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

A．can’t

B．needn’t

C．shouldn’t

D．mustn’t

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

A．Can

B．Should

C．Must

D．Need

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

A．must

B．can

C．have to

D．should

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

A．Must

B．Could

C．Would

D．Should