He made a mistake, but then he took action to change the situation ________ it got worse.
A. until B. when C. before D. because
Having ________ exercise every day will do great good to your health.
A. a lot B. a number of C. too much D. plenty of
— I’m new in Wuxi.
— Take a map of Wuxi with you. You’ll find it of great ________ in helping you to get round Wuxi.
A. price B. cost C. interest D. importance
Look at the sign! It says “No Smoking!” You ________ smoke here. It’s dangerous.
A. mustn’t B. ought not to C. needn’t D. don’t have to
Boris has brain. In fact, I don’t think that anyone in the class has ________ IQ.
A. a high B. a higher C. the higher D. the highest
— What do you think of the young lady?
— She is hard-working. She ________ all her effort into her work before she got ill.
A. has put B. put C. had put D. would put
