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--- She looks very happy. She      have passed the exam.

--- I guess so.

A. should      B. could         C. must         D. might

—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

—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

—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

—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

— 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

—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

— 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

 5. — 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

—She looks very happy. She ________ have passed the exam.

—I guess so. It’s not difficult at all.

A. should　　　　　　　　　　　　　　　　　　　　　　　　 B. could

C. must 　　　　　　　　　　　　　　　　　　　　　　　　 D. might