题目内容

【题目】My computer start this morning. There must have been something wrong with it.

A.shouldn'tB.wouldn'tC.needn'tD.mustn't

【答案】B

【解析】

考查情态动词。句意：我的电脑今早怎么也启动不了了。一定是出了什么问题。A. shouldn’t不应该；B. wouldn’t不会；C. needn't不需要；D. mustn’t禁止，不允许。分析句子，后句提到“一定有什么东西坏了，所以电脑启动不了”。根据情态动词wouldn't表示过去的习惯或反复性的动作。故选B。

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