【题目】I ______my examination easily but I made too many stupid mistakes.
A.should passB.could have passed
C.had passedD.must have passed
在线课程【答案】B
【解析】
考查情态动词+have done的用法。句意为:我本来能够轻松地通过这次考试的，但是我犯了太多愚蠢的错误。结合语境可知，此处考查虚拟语气，且与过去的事实相反，应用could/would/might have done的结构，could have passed本能通过（事实上未通过），故选B项。