【題目】—— What does Jack do in that company?

—— I’m not sure. He ________ be a salesman.

A. can’t B. might C. must D. can

【答案】B

【解析】

試題分析：句意：杰克在那家公司是做什么的？——我不確定。他可能是一名銷售員。在英語中，情態(tài)動詞可以表示推測，肯定的推測用must，一定是；否定的推測用can’t，不可能是；might或許是，把握性不大。依據(jù)句意，答案為B。

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