1 . The river is too deep. You ________ swim in it.

A．can

B．mustn’t

C．must

D．may

2 . Mobile phones and electronic calculators ________ be brought into exam rooms in the National Entrance Examinations in China.

A．couldn’t

B．needn’t

C．mustn’t

D．may not

3 . At the bus stop, you _________ push your way onto the bus.

A．can’t

B．can

C．mustn’t

D．must

4 . To make our city more beautiful, rubbish ________ into the river.

A．needn’t be thrown

B．mustn’t be thrown

C．can’t throw

5 . —________ we play soccer here?
—No, you ________ play it near the road. It’s too dangerous.

A．Can; can

B．Can; mustn’t

C．Must; may

D．Can’t; won’t

6 . —Hurry up, Dad! Let’s go across the street quickly.
—No, Peter, you ________. The traffic lights are red.

A．mustn’t

B．wouldn’t

C．needn’t

D．don’t have to

7 . Look at the sign. It means: we ________ swim here.

A．oughtn’t

B．mustn’t

C．needn’t

D．wouldn’t

8 . According to the traffic law, children under 12 ________ ride bicycles on the road.

A．won’t

B．mightn’t

C．needn’t

D．mustn’t

9 . In Australia, you ________ drive on the right. It’s against the law. (must)

10 . Look at the sign! It means we ________ ride bicycles here.

A．mustn’t

B．needn’t

C．shouldn’t

D．can