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[单选题] lt is politely requested by the hotel management that radios after 11 0clock at night
A
were not played
B
not to play
C
not be played
D
did not play
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参考答案
试题答案：
C
答案解释：
句意：饭店管理部门恳请客人晚上11点以后不要打开收音机。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。且此处表示被动，故选C
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