【单选题】 It is politely requested by the hotel management that radios ______ after 11 o' clock at night.
A．were not played
B．not to play
C．not be played
D．did not play
网考网参考答案：C
网考网解析：
本题测试虚拟语气。题句中动词request所接从句要用虚拟语气：其结构为should+动词原形，should可省略。C项为be+过去分词形式，故正确。要求用虚拟语气的常用动词有：suggest，re quest，propose, desire，recommend，advise，ask，command，decide，demand，insist，order等。
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