When the teacher speaks, we have to keep quiet, ?
| A．don’t we | B．mustn’t he | C．haven’t we | D．doesn’t he |
相关试题
It is a good example of a site that many people think _____ to change.
| A．need | B．to need | C．needs | D．needing |
Tom, you _____ leave all your clothes on the floor like this!
| A．wouldn’t | B．mustn’t | C．needn’t | D．may not |
Mrs. Taylor has ___ 8-year-old daughter who has ____ gift for painting---she has won two national prizes.
| A．a; a | B．an; the | C．an; a | D．the; a |
If you go by ____ train, you can have quite a comfortable journey, but make sure you get ____ fast one.
| A．the; the | B．不填；a | C．the; a | D．不填；不填 |
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