The murderer was brought in, with his hands _____ behind his back.
A. being tied B. having tied C. to be tied D. tied
We saw many students playing on the playground, most of them _____ girls.
A. are B. being C. were D. have been
He must have finished his homework for a long time, _____ he?
A. mustn’t B. didn’t C. needn’t D. hasn’t
We can see the blue sky and the shining sun. There is no possibility _____ it will rain or snow today.
A. which B. where C. that D. whether
Leaders of many countries have been trying to _____ what it is that makes China develop so fast.
A. carry out B. figure out C. break out D. watch out
The computer system _____ suddenly while he was searching for information on the Internet.
A. broke down B. broke out C. broke up D. broke in