- The air pollution is terrible.
- It will be worse ________ we take action to protect the environment.
A. if B. unless C. until D. when
______ he talked with her for a long time, he failed to convince(说服)her.
A. Though B. But C. Since D. As
Mr Smith usually reads a newspaper he’s waiting for the bus.
A. if B. the C. because D. while
Many teenagers think they ____ to play computer games on weekends.
A. were allowed B. should be allowed
C. are allowed D. will be allowed
The meeting is important that you mustn’t miss it. (盐城)
A. very B. such C. so D. too
Doctor Wang operated _______my mother yesterday.
A. in B. at C. for D. on
