1 . People ______ smoke or make a fire after entering the forest.

A．must

B．mustn’t

C．need

D．needn’t

2 . —I’ve told you many times you ________ put the vase on the table. The kids may knock it over.
—Sorry, I won’t do it again.

A．wouldn’t

B．mustn’t

C．couldn’t

D．needn’t

3 . Young children ________ play with fire because it is very dangerous to do that.

A．mustn’t

B．may not

C．couldn’t

D．needn’t

4 . We ________ cross the street until the traffic lights turn green.

A．can’t

B．may not

C．mustn’t

5 . You ________ (can’t, mustn’t) play with fire. It’s too dangerous.

6 . heater       mustn’t       the       we       near       put       newspapers       the
____________________.

7 . I _______ watch TV for more than an hour from Monday to Friday. It’s against the family rules.

A．needn’t

B．can’t

C．mustn’t

D．may not

8 . mustn’t       with       hands       touch       we       wet       TV       the（.）
____________________.

9 . According to the new regulation (规定), school students ________ take their cell phones to the classroom.

A．wouldn’t

B．needn’t

C．mustn’t

10 . —Look at the “No parking” sign. You ________ park your car here.
—Sorry! I am moving it right now.

A．should

B．needn’t

C．mustn’t