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20、——She looks rather upset. She          have failed the exam.

——I guess so. It's very difficult after all.

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

20、C

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——She looks rather upset. She          have failed the exam.

——I guess so. It's very difficult after all.

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

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科目:高中英语 来源:2013-2014学年北京市石景山区高三上学期期末考试英语试卷(解析版) 题型:单项填空

 — She looks rather upset. She        the exam.

— I guess so. It’s very difficult after all.

A. must have failed   B. can fail

C. would have failed D. should fail

 

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