It’s politely requested by the hotel management that radios after 10 o’clock at night.A. w

问题补充：

It’s politely requested by the hotel management that radios after 10 o’clock at night.

A. were not played

B. not to play

C. not be played

D. did not play

答案：

A. were not played

B. not to play

(答案→)C. not be played

D. did not play

解析：句意为“饭店管理部门是恳请客人晚上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, recommend, 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。