It’s politely requested by the hotel management that radios ________ after 10 o’clock at night．A.were not playedB.not to playC.not be playedD.did not play
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C解析句意为“饭店管理部门恳请客人晚上10点以后不要开收音机。”一些动词要求与虚拟语气的从句相结合。这些动词主要有：ask(要求)，advise, demand, desire, determine, decide, insist, propose, order, remend, require, request, suggest等。句中的play同radios之间存在被动关系，空白处相当于should not be played。