I really don"t know how to thank you, but for your help, I ________ my lost nec
题型：不详难度：来源：
I really don"t know how to thank you, but for your help, I ________ my lost necklace.| A．couldn"t have found | B．mustn"t have found | | C．couldn"t find | D．wouldn"t find |
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答案
| A |
解析
| A 句意：我真的不知道该怎样感谢你，没有你的帮助，我不可能找到我丢失的项链。couldn"t have done表示对过去情况的否定推测，意为“不可能”。 |
举一反三
Without the development of the Internet, Taobao and Tmall______$ 5.7 billion in sales on 11 November, 2013.| A．wouldn"t make | B．didn"t make | C．hadn"t made | D．wouldn"t have made |
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Frankly speaking, I"d rather you________anything about it for the time being.| A．have done | B．haven"t done | | C．don"t do | D．didn"t do |
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We________John"s name on the race list yesterday but for his recent injury.| A．will put | B．will have put | | C．would put | D．would have put |
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The space suits can be adjusted so that the team can reproduce different levels of gravity as if they________in space.| A．are | B．has been | | C．were | D．had been |
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(2014·蜀光中学月考)The weather turned out to be fine yesterday.I________the trouble to carry the umbrella with me.| A．couldn’t have taken | B．mustn’t have taken | | C．needn’t have taken | D．didn’t need to take |
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