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According to what he complained about, something must have gone wrong with the computer, ______?
A.mustn’t itB.didn’t heC.hasn’t heD.didn’t it
D

试题分析:考查反意问句:对已发生的过去情况的推测,若陈述句谓语部分有“must have done”,而且有表示过去的时间状语,问句部分用didn't;若没有表示过去的时间状语,问句部分用haven't或hasn't。这句话的what he complained about,说明是过去的情况。选D。
点评:反意问句遵循前否后肯,前肯后否的原则,对于情态动词的用法,要根据具体情况来定,must表示必须,反意问句用must来做,must be表示推测,和be动词一致。
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