1 . — Why don’t you enter the office? They are waiting for you.
— The door ________ open, no matter how hard I pushed.

A．won’t

B．can’t

C．mustn’t

D．needn’t

2 . With no gravity to push against, astronauts’ bones and muscles ________become weak.

A．should

B．must

C．can

D．need

3 . I asked in the bookshop about Will Dutton’s latest book, but all they           tell me was that it would come out before the end of the year.

A．might

B．must

C．could

D．should

4 . ---______ you possibly take me to the railway station on your way to work tomorrow?
---No problem.

A．May

B．Might

C．Should

D．Could

5 . Didn't she notice they were crying there? How ________she just walk away from her children like that?

A．should

B．would

C．could

D．need

6 . Mike ________ come to see me this afternoon. I don’t want to go window shopping with you in case he comes.

A．can

B．must

C．may

D．will

7 . Old age _______ burn and rage at the close of day; rage, rage against the dying of the light.

A．couldn’t

B．should

C．wouldn’t

D．shall

8 . ________ you make so much noise, Jimmy? Your little sister is still sleeping.

A．Can’t

B．Must

C．May

D．Won’t

9 . —Where ________ little Tom be now?
—I wonder what he ________.

A．can;is up to	B．must;is about
C．may;is doing	D．must;playing

10 . —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