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

A．would have been saved B．had been saved

C．will be saved D．was saved

 

A

【解析】A　[句意：如果我早知道這個(gè)電腦程序，就可以節(jié)省大量的時(shí)間和精力了。根據(jù)句子的倒裝特征判斷此處是省略了if的虛擬語氣，原形是：If I had known about this computer program, a huge amount of time and energy ________.故選擇A。]

 

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