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

試題分析：考查反意問句：對已發(fā)生的過去情況的推測，若陳述句謂語部分有“must have done”，而且有表示過去的時間狀語，問句部分用didn't；若沒有表示過去的時間狀語，問句部分用haven't或hasn't。這句話的what he complained about，說明是過去的情況。選D。
點評：反意問句遵循前否后肯，前肯后否的原則，對于情態(tài)動詞的用法，要根據(jù)具體情況來定，must表示必須，反意問句用must來做，must be表示推測，和be動詞一致。
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