A:IsMyrnaworkinginthecitytoday?   B:She

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问题详情:

A:IsMyrnaworkinginthecitytoday?   B:She

A: Is Myrna working in the city today?

    B: She _______ I’m not sure.

    A. could        B. could have      C. could be

【回答】

C

知识点:情态动词

题型:选择题

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