Question

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

Answer 1

【答案】：A
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“ⅡI 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。