英语选择题had i known about this computer program,a huge amount of time and energy,A,wou...

题目

英语选择题had i known about this computer program,a huge amount of time and energy,A,wou...
英语选择题had i known about this computer program,a huge amount of time and energy,A,would have been saved,B,had been saved .CWill be saved .D,was saved

答案

A 虚拟语气
时态搭配是：
if had done,would/should/might/could have done