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

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问题 Had I known about this computer program,a huge amount of time and energy______.

选项 A、would have been saved
B、had been saved
C、will be saved
D、was saved

答案A

解析 根据句子的倒装特征判断此处是省略了if的虚拟条件句,此句可还原为“If I had known about this computer program,a huge amount of time and energy______.”此处表示与过去事实相反的假设,故A项正确。句意为:如果我早知道这个电脑程序,就可以节省大量的时间和精力了。
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