809.She looks very happy.She ______ have passed the exam.
I guess so.It's not difficult after all.
A.should
B.could
C.must
D.might
810.They ______ two free tickets to Canada,otherwise they'd never have been able to afford to go.
A.had got
B.got
C.have got
D.get
809.答案是C;由上文的happy和下文的not difficult after all可以推断一定通过了考试。
810.答案是B;根据otherwise they'd never have been able…得知，此句为与过去事实相反的虚拟语气句，故用一般过去时表示过去的真实情况。
