Such a mistake could have been avoided.—Unfortunately,he ___

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Such a mistake could have been avoided.—Unfortunately,he _______ the mistake again and again
A．repeated B.would repeat C．had repeated D.would have repeated

选A.Such a mistake could have been avoided.是虚拟语气,表示像这样的错误本应避免.
Unfortunately,不幸的是,he repeated the mistake again and again,他一再的重复这样的错误时已成事实.因此选A.
再问：额。为什么选用过去式哎觉得楼下的也有理哎。呜我晕了。帮忙解释下呗。
再答：大家不都选A么。...他一再的重复错误是事实，已经发生过的事实。前一句是虚拟语气，could have 表示本应该
再问： “‘不幸的是，他不断地犯着同一个错误。’”“不断犯”是从过去的过去影响到过去这个时间点。这有什么错了？
再答：这个不能矫情，确实是过去的，对现在没有影响啊。比如，你吃过早餐了。这句话肯定是过去的，不能是从过去影响到现在吧

_______ as he is,jack could have made such a mistake.A：A foo _______ as he is,jack could have made such a mistake. Fool ___ Jerry is,he could not have done such a thing. He could't stand ___such a mistake He _______ such a mistake if he _______ my advice. Not only you but also Tom ___ such a mistake He is very ___ to make such a mistake（fun）用所给动词是适当形式填空 I don't think he could do such a stupid thing last night,___ as if he would ever make such a mistake翻译 He must have been ill,___ he? 英语翻译Still,he could never have imagined such a capacity in hi 英语：Fool as Jerry is,he could not have done such a thing.