?It's nearly 6:00pm, will you have supper here?

?Sorry, I ________. I have many things to do.

A. mustn't

B. can't

C. needn't

D. don't

?Could I look at your pictures?

?Yes, of course you ________.

A. could

B. can

C. will

D. might

?May I go out to play basketball, Dad?

?No, you ________. You must finish your homework first.

A. mustn't

B. may not

C. couldn't

D. needn't

You ________worry about me. It's nothing serious.

A. can't

B. mustn't

C. needn't

D. won't

?Where is Jack, please?

?He ________be in the reading room.

A. can

B. need

C. would

D. must

?It nearly took me an hour to walk here.　　

?Have a drink, then. You ________ be thirsty.

A. should

B. can

C. will

D. must

?Mum, may I watch TV now?

?Sure, but you ________ help me with my housework first.

A. can

B. may

C. must

D. could

Susan's parents have bought a large house with a swimming pool. It ________ be very expensive.

A. must

B. can

C. mustn't

D. can't

You ________ go and ask Meimei. She ________ know the answer.

A. must; can

B. must; may

C. need; can

D. can; may

?Would you like to go swimming with me this afternoon?

?I'd love to. But I'm afraid I ________. I have too much work to do.

A. can't

B. mustn't

C. needn't

D. may not