—Who’ssinginginthegarden?  —It

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问题详情:

 —Who’ssinginginthegarden?  —It

 —Who’s singing in the garden?

   —It _______be Mr. Brown. He always practices singing at this time.

     A. must                            B. can’t                       C. mustn’t

【回答】

A

知识点:情态动词

题型:选择题

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