We _____ on this project for four hours. Let"s have a rest.A. are working B. hav
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We _____ on this project for four hours. Let"s have a rest. |
A. are working B. have been working C. worked D. had worked |
答案
举一反三
一 We"ve spent too much money recently. 一 Well, it isn"t surprising. Our friends and relatives _____ around all the time. |
A. are coming B. had come C. were coming D. have been coming |
I"m tired out. I _____ all afternoon and I don"t seem to have finished anything. |
A. shopped B. have shopped C. had shopped D. have been shopping |
— Why, Jack, you look so tired! — Well, I _____ the house and I must finish the work tomorrow. |
A. was painting B. will be painting C. have painted D. have been painting |
Joseph _____ to evening classes since last month, but he still can"t say "What"s your name?" in Russian. |
[ ] |
A. has been going B. went C. goes D. has gone |
Over the past decades, sea ice _____ in the Arctic as a result of global warming. |
A. had decreased B. decreased C. has been decreasing D. is decreasing |
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