52单词网 > 高中英语 > 高中英语题库 > ----- Mary looks very upset. She failed to pass the exam. ----- I guess so. It's

----- Mary looks very upset. She failed to pass the exam. ----- I guess so. It's

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----- Mary looks very upset. She failed to pass the exam. ----- I guess so. It's

 ----- Mary looks very upset. She _______ failed to pass the exam.

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

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

试题答案

A

标签：tofailedpassexamthe

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