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

问题补充：

—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

答案：

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。