--- Is Uncle Wang coming by train? --- I’m not sure. He ______ drive his car.

A. may B. can C. may be D. need

A 【解析】句意：——王叔叔會乘火車來嗎——我不敢肯定。他可能開他的車。A. may可能；B. can可以，能夠；C. may be大概；D. need需要。根據(jù)“I’m not sure.”可知，也可能會開車來，表示推測，C答案中的be后不能跟動詞原形，故答案為A。
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