Question

—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?

Answer 1

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。