问题
选择题
—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
B
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。