1 . —Must I attend the meeting?
—No, you ________. You can ask Henry to go instead.

A．mustn’t

B．needn’t

C．shouldn’t

2 . We ________ stop throwing rubbish into the sea because it is bad for the sea life.

A．may

B．can

C．might

D．must

3 . —Must I hand in my book review this evening?
—Oh, you _______. You can hand it in tomorrow morning.

A．must

B．don’t have to

C．mustn’t

4 . President Xi said that the future ________ belong to the youth.

A．can

B．may

C．must

5 . —Mom, can I play ping-pong with Dave right now?
—No, you ________ do the dishes and clean your room first.

A．can’t

B．must

C．may

6 . —Whose backpack is this?
—It ________ be Jim’s. Look, his student’s card is in it.

A．must

B．can

C．may

7 . —Dad, it’s too hot. Can I swim alone in the river?
—No, you ________. It’s quite dangerous.

A．mustn’t

B．needn’t

C．shouldn’t

8 . —Whose dictionary is this?
—It________ be Sarah’s. Look! Her name is on it.

A．must

B．need

C．mustn’t

D．needn’t

9 . Children under 12 ________ sit in the front of seat of the car. It’s too dangerous.

A．couldn’t

B．needn’t

C．won’t

D．mustn’t

10 . David ________ be happy because our teacher praised his great progress.

A．must

B．can

C．mustn’t

D．can’t