All the students didn't agree to the plan that the travel service ________the trip to the West Lake.A.had made forB.had made a plan forC.has been made onD.has made a decision on
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A解析导解：本题的主要结构是：All he students didn't agree to the plan for the trip to the West Lake.其中plan作先行词，后有一个定语从句，the plan for…意为“……的计划”．要注意题中的时态，从分析题意可知，定语从句中应用过去完成时，故