1 . —Sorry, Tony. I’m too busy to attend the meeting this Saturday.
—Well, you ________ attend it if you truly can’t spare the time.

A．shouldn’t

B．needn’t

C．can’t

D．mustn’t

2 . I advise you to stay away from Mary. Although she is usually easy-going, she ______be quite annoying sometimes.

A．can

B．need

C．must

D．should

3 . It is very important that we          be honest about what we do not know.

A．need

B．will

C．must

D．can

4 . —The test is very important to us. Do you think so?
—Yes, so we ________ be too careful during the test.

A．mustn’t

B．daren’t

C．needn’t

D．can’t

5 . People liked O. Henry’s stories, because simple as the tales were, they ______ finish with a sudden change at the end, to the readers’ surprise.

A．could

B．would

C．might

D．must

6 . —_________I go with my friends to the harvest festival?
—No. you’d better not.

A．Must

B．May

C．Would

D．Need

7 . This red bicycle ________ be Linda’s, because she rides it to school every day.

A．can

B．would

C．must

D．might

8 . Mum ____be preparing for the festival in the kitchen. Let’s go and see!

A．can

B．may

C．must

D．shall

9 . 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

10 . This toy        be Amy’s. She is the only kid at the picnic.

A．can

B．must

C．need

D．can’t