题目内容

If you ________ smoke in the room, please keep the windows open.
A．shouldB．mayC．shallD．must
D

试题分析：考查情态动词：A. should应该B. may 可以C. shall将，会，可以，D. must必须，偏要，句意：如果你偏要抽烟，请把窗户打开。选D。
点评：情态动词表推测注意以下解题步骤：认真审题，结合所给出的语境，正确把握说话者的语气、情感、态度、观点等。认真思考所给选项中情态动词的基本特征和用法，并结合语境推敲答案。
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