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____ the computer properly led to its failure to work.

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____ the computer properly led to its failure to work.
A.Not his operating B.His not operating
C.His not being operated D.Not his having operated
Which one?Why?
____ the computer properly led to its failure to work.
选B,先翻下意思吧,由于他操作不当,导致电脑坏了,谓语是led,因此前面都是主语,出现动词只能用动名词形式,而且这个操作的逻辑主语是他,和operate是主谓的关系,不用被动语态,所以要加his,整合即
his not operating