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

发布时间：2020-08-16 11:48:46


. Had I known about this puter program, a huge amount of time and energy      .  
A. would have been saved
B. had been saved
C. will be saved
D. was saved

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(答案→)A. would have been saved
B. had been saved
C. will be saved
D. was saved
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