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HadIknownaboutthiscomputerprogram,ahugeamountoftimeande...

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问题详情:

HadIknownaboutthiscomputerprogram,ahugeamountoftimeande...

Had I known about this computer program, a huge amount of time and energy ________.

 A. would have been saved  B. had been saved    C. must be saved       D. was saved

【回答】

A

知识点:虚拟语气与情态动词

题型:选择题

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