I was just chatting with the director when a stranger ________.
| A．cut in | B．cut down |
| C．cut off | D．cut up |
You _____ to eat if you don’t feel like it.
| A．needn’t | B．mustn’t | C．don’t have | D．haven’t |
How _____ you say that you really understand the whole story if you have covered only part of the article?
| A．can | B．must | C．need | D．may |
It has been announced that candidates _____ remain in their seats until all the papers have been collected.
| A．can | B．will | C．may | D．shall |
Parents must take good care of their children, _____ they?
| A．mustn’t | B．don’t | C．needn’t | D．aren’t |
He must be in the reading-room, _____ he?
| A．mustn’t | B．doesn’t | C．needn’t | D．isn’t |