You had better book rooms at the hotel in advance you should find no room on your arrivalA.so thatB.even ifC.in caseD.now that
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C解析试题分析：考查连词：A.so that为了，因此，B.even if既然，C.in case以防， D.now that既然，句意：你最好提前在旅店预定旅馆以防你到的时候没有房间。In case这里连接目的状语从句，选C。考点：考查连词