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1、动词的时态和语态1. Before the first non-stop flight made in 1949, it _ necessary for all planes to land for refueling. a. would be b. has been c. had been d. would have been2. Once environmental damage _, it takes many years for the system to recover. a. has done b. is to do c. does d. is done 3. Until then
2、, his family _ from him for six months. a. didnt hear b. hasnt been hearing c. hasnt heard d. hadnt heard4. If she doesnt tell him the truth now, hell simply keep on asking her until she _. a. does b. has done c. will do d. would do5. While people may refer to television for up-to-the-minute news, i
3、t is unlikely that television _ the newspaper completely. a. replaced b. have replaced c. replace d. will replace6. She ought to stop work; she has a headache because she _ too long. a. has been reading b. had read c. is reading d. read7. My train arrives in New York at eight oclock tonight. The pla
4、ne I would like to take from there _ by then. a. would leave b. will have left c. has left d .had left8. A thief who broke into a church was caught because traces of wax, found on his clothes, _ from the sort of candles used only in churches. a. come b. that came c. coming d. had come9. You should h
5、ave put the milk in the ice-box; I expect it _ undrinkable by now. a. became b. had become c. has become d. become10. Whenever we visited them, they _ television. a. have watched b. had watched c. watch d. were watching11. He has been looking everywhere for you, and he still _. a. does b. has been c
6、. has d. is12. It was only after some progress _ in the use and development of electric current that men began to realize the importance and possibilities of magnetism. a. was made b. would have been made c. has been made d. had been made13. The company _ a rise in salary for ages, but nothing has h
7、appened yet.a. promised b. is promised c. is promising d. has been promising14. This is one of the rarest questions that _ at such a meeting.a. has ever been raised b. is raised c. are raised d. have ever been raised15. In this experiment, they are wakened several times during the night, and asked t
8、o report what they _. a. have just been dreaming b. are just dreaming c. had just been dreaming d. had just dreamed16. Tom is the only one of the students in his class who _ studied in China. a. have b. had c. hadnt d. has17. Henry will not be able to attend the meeting tonight because _ a class the
9、n. a. he will be teaching b. he must be teaching c. he will have been teaching d. he is teaching18. Ever since the Smiths moved to the suburbs a year ago, they _ better health. a. are enjoying b. have been enjoying c. could have enjoying d. had enjoying19. Those who have applied for the post _ in th
10、e office. a .are being interviewed b. are interviewing c. interviewing d. to be interviewing20. After driving for thirty miles, she suddenly realized that she _ in the wrong direction. a. was driving b. has been driving c. had been driving d. drove21. On his next birthday he _ married for ten years.
11、 a. has been b. will be c. will have been d. would have been22. By the time the applicant makes up his mind, the offer _. a. will cancel b. will have been cancelled c. will be canceling d. is cancelled23. He will come to the discussion the moment he _ his work. a. finishes b. had finished c. will finish d. finished24. He _ with Smith at least four times in the past three years. a. has been seen to meet b. was seen to meet c. had been seen meeting d. is seen meeting25. When it rained, a football match _ in the sports ground.a. was being held b. was held c. had been held d. was holding