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--- 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:——王叔叔会乘火车来吗——我不敢肯定。他可能开他的车。A. may可能;B. can可以,能够;C. may be大概;D. need需要。根据“I’m not sure.”可知,也可能会开车来,表示推测,C答案中的be后不能跟动词原形,故答案为A。
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