1 . Even a small personal computer        store vast amounts of information.

A．might	B．can
C．ought to	D．has to

2 . Come here, Mary. If you stand at this angle, you ______ just see the sunset.

A．must	B．need
C．can	D．should

3 . Obviously,a good habit      help us to speed up to reach our destinations.

A．need

B．must

C．can

D．shall

4 . Only when you have obtained enough data______ come to a sound conclusion.

A．can you

B．you can

C．would you

D．you would

5 . — Sorry, sir. I ______ follow you. Would you please speak slower?
— Ok.

A．can’t

B．mustn’t

C．shouldn’t

D．needn’t

6 . .
Education knows no limits. It _____ take place anywhere, whether in a kitchen or in the job.

A．should

B．can

C．need

D．must