问题补充:
You didn’t let me drive. If we____in turn, you___ so tired.
A. drove; didn’t get
B. drove; wouldn’t get
C. were driving; wouldn’t get
D. had driven; wouldn’t have got
答案:
A. drove; didn’t get
B. drove; wouldn’t get
C. were driving; wouldn’t get
(答案→)D. had driven; wouldn’t have got
解析:此题表示与过去事实相反的假设,主句用would have done,从句用had done,此处用了倒装的省略形式,即省去if, had提到句首。