Every teacher in the school accepted the suggestion that the students _______ their uniforms to school. ( )
【正确答案】 D
【答案解析】解析：由suggestion，propose，demand等表示建议、要求、命令类的名词引导的含被动态的分句为强制性be一型虚拟式，其分句为should+动词原形，其中should可省略。答案为D。