— I didn’t go to class last night because my car broke down.— You mine. I wasn’t using it.

问题补充：

— I didn’t go to class last night because my car broke down.

— You mine. I wasn’t using it.

A. should borrow

B. might have borrowed

C. could have borrowed

D. must have borrowed

答案：

A. should borrow

B. might have borrowed

(答案→)C. could have borrowed

D. must have borrowed

解析：考查虚拟语气。句意：因为我的车抛锚了，昨晚我没去上课。——你本可以借我的啊！我没有用它。可知选C，“could+have+done”是虚拟语气，表示对过去事情的假设，意思是本来能够做某事而没有做。might have done 是过去可能做了，must have done是过去一定做了。选C。