The dictionary mustn’t ________ from the library.
A．take away
B．taken away
C．are taken away
D．be taken away
You will not succeed ______ you work harder.
A．if B．when C．unless D．because.
I’d like to go swimming with you, ______ I am too busy today.
A．but B．and C．so D．or
I ______ in the hospital yesterday. I had to look after my sick mother.
A．am B．was C．are D．were
— May I smoke here?
— No, you ______ . This is a no-smoking room.
A．needn’t B．mustn’t C．couldn’t D．wouldn’t
They were all very tired, but ______ took a rest.
A．everybody B．somebody C．anybody D．nobody
