1 . —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

2 . —I’ve got a headache, Mom.
—Oh, you ______ keep the windows open while sleeping.

A．shouldn’t

B．needn’t

C．wouldn’t

3 . You ________ run on the busy road. It’s dangerous!

A．needn’t

B．shouldn’t

C．won’t

D．wouldn’t

4 . We ________ know something about the Youth Protection Law to protect ourselves.

A．can

B．would

C．may

D．should

5 . —Excuse me, but we _________ wait in line to get on the subway.
—I’m sorry.

A．might

B．should

C．could

D．would

6 . —I have a bad cold.
—You ________ lie down and have a good rest.

A．should

B．may

C．will

D．can

7 . If you want to lose weight, you ________ eat less and exercise more.

A．should

B．could

C．couldn’t

D．shouldn’t

8 . When we are on the bus, we ________ give our seats to the old people.

A．won’t

B．can’t

C．should

D．must

9 . Earthquakes are very dangerous. You ________ learn to protect yourselves.

A．should

B．could

C．might

10 . You _________ be hungry after the long walk. Help yourself to some cakes.

A．can’t

B．shouldn’t

C．need

D．must