—Catherine, I have cleaned the room for you.—Thanks. You _________it. I could ma
题型：不详难度：来源：
—Catherine, I have cleaned the room for you.
—Thanks. You _________it. I could manage it myself. | A．needn’t do | B．needn’t have done | | C．mustn’t do | D．shouldn’t have done |
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答案
| B |
解析
| 句子的语境是：“我自己能做”，所以“你本不必做的”。选A还是B呢？根据前面一句中的 have cleaned 可知，动作已经发生，所以此处谈论的是一个过去情况，故选 needn’t have done。 |
举一反三
This cake is very sweet. You _________ a lot of sugar in it. | A．should put | B．could have put | C．might put | D．must have put |
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–She looks upset.
--Yes, I’d rather I _____________ her the bad news.| A．didn’t tell | B．don’t tell | C．hadn’t told | D．wouldn’t tell |
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If human beings had been a bit less greedy and cruel, more birds and animals _______dying out.| A．ought to avoid | B．could have been avoided | | C．should have avoided | D．might have avoided |
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He ____the job well, but he_______so careless.| A．had done; had been | B．could do; was | | C．could have done; was | D．hadn’t done; had been |
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It is strongly suggested that measures ________students to cheat in the exams.| A．be taken to prevent | B．be taken to forbid | | C．are taken to prevent | D．are taken to forbid |
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