题目内容

Students should _______ to smoke.   
A．not be allowedB．be not allowedC．not allowD．be allowed
A
考查allow的用法。句意“学生不应该被允许吸烟。”students和allow之间是被动关系，应该用被动语态，排除C；not放在be之前，排除B。句子表否定。故选A。
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