英语选择题had i known about this computer program,a huge amount of time and energy,A,wou...
问题描述：
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
A 虚拟语气
时态搭配是：
if had done,would/should/might/could have done