【題目】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能夠，表推測用于否定和疑問；句意：我不確定茉莉現(xiàn)在在哪兒。她也許在教室里準備即將到來的考試。根據(jù)句意，故選C。

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