—I didn’t go to work yesterday because my car broke down.—You mine.I wasn’t using it the

—I didn’t go to work yesterday because my car broke down.
—You mine.I wasn’t using it then.
A. might borrow
B. could have borrowed　
C. must have borrowed
D. ought to borrow

A. might borrow(答案→)B. could have borrowed　C. must have borrowedD. ought to borrow解析：此题考查虚拟语气的用法。根据句意“你本来可以用我的车子，因我当时不用它，而你未用” 可知该空表示的是与过去事实相反的假设，用could have done。

这下我知道了