1 . —Must I finish the task in two days?
—No, you ________.

A．mustn’t

B．shouldn’t

C．needn’t

2 . In the fire practice, we ________ follow the teacher’s orders carefully.

A．can

B．must

C．may

D．could

3 . —Look! The man at the gate __________ be our headmaster. He almost stands there every morning.
—No, it _________ be him. He is holding a meeting in the office now.

A．can; can’t

B．must; mustn’t

C．must; can’t

D．might; mustn’t

4 . Oh, come on, Zack! ________ you talk to me like that? I’m your mother after all.

A．Can’t

B．Can

C．Mustn’t

D．Must

5 . State Security (安全) Law of the People’s Republic of China shows that we ________ provide any information for foreigners.

A．shouldn’t

B．won’t

C．mustn’t

6 . —The high school entrance examination is coming!
—Yes, our teacher tells us we           be too careful while taking exams.

A．mustn’t

B．needn’t

C．can’t

D．shouldn’t

7 . We ________ look left and right when crossing the street.

A．may

B．could

C．must

8 . Children ________ sit in the front of the car because it’s really dangerous.

A．needn’t

B．need

C．mustn’t

D．must

9 . —May I go out in the afternoon?
—No, you ________. You must do your homework.

A．mustn’t

B．don’t

C．shouldn’t

D．needn’t

10 . — You m________ listen to teachers in class.
— I will, Mom.