Would you have called her up had it been possible?Yes,but I ___busy doing my homework.

题目

Would you have called her up had it been possible?Yes,but I ___busy doing my homework.
A.was B.were C.had been D.would be
这个题怎么选啊?为什么?

答案

1、A正确,先看后面的一个空,不可能选择BD,but一般讲的是事实,后面很难接虚拟语气,找不到过去的时间点,不能用过去完成时,排除C,只能选择A,A的前半部分是虚拟语气,是对过去的虚拟,从句用的是if的倒装,此时省略if这个连词,把助动词提前,当然说成 if it had been 也是对的