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【题目】I'm not sure where Molly is now.She ______ be inside the classroom preparing for the coming exam.
A.must
B.need
C.might
D.can

【答案】C
【解析】A.must 一定,肯定;B.need需要;C.might可能;D.can能够,表推测用于否定和疑问;句意:我不确定茉莉现在在哪儿。她也许在教室里准备即将到来的考试。根据句意,故选C。

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