- — Why does the lake smell terrible?— Because large quantities of water ____. [ ]A. have pollutedB. are being polluted...
- The doctor_____ my brother for ten years.[ ]A. married withB. has marriedC. has been marriedD. has been married to
- I like these English songs and they _____ many times on the radio.[ ]A. taughtB. have taughtC. are taughtD. have been...
- Every year a flood of farmers arrive in Shenzhen for the money-making jobs they _____ before leaving theirhometowns.[...
- — Why does the Lake smell terrible?— Because large quantities of water _____.[ ]A. have pollutedB. is being pollutedC...
- In the last few years thousands of films _____ all over the world.[ ]A. have producedB. have been producedC. are prod...
- His sister left home in 1998, and _____ since.[ ]A. had not been heard ofB. has not been heard ofC. had not heard ofD...
- — Is the meeting held in Room 302 or 303?— It should be 302. But I hear that it _____ till tomorrow. [ ]A. was put of...
- Every possible means ____ to save the wounded soldier up to now. [ ]A. was triedB. were triedC. have been triedD. has...
- My brother and I have____ her birthday party.[ ]A. been invitedB. been invited forC. invited toD. been invited to
- So far, the criminals____ by the police.[ ]A. had been discoveredB. have been discoveredC. are discoveredD. will be d...
- Professor James will give us a lecture on the Western culture, but when and where _____ yet.[ ]A. hasn't been decided...
- — Hey! Here is a message on my cell phone, telling me to send money to...— Delete it! It's a trick. Many a person ___...
- — Alice, why aren't you at work today?— I _____ a day off.[ ]A. have givenB. have been givenC. gaveD. was given
- Every possible means _____ to prevent the air pollution, but the sky is still not clear.[ ]A. is usedB. are usedC. ha...