The concert_______for tomorrow will be put off.A.planned. B.planning. C.to plan. D.plan

问题描述:

The concert_______for tomorrow will be put off.
A.planned. B.planning. C.to plan. D.plan

应该是to be planned

选A.原计划定于明天的音乐会将要推迟.
planned,过去分词作定语,表示“原计划的”.