You had better book rooms at the hotel in advance you should find no room on your arrival.
A. so that
B. even if
C. in case
D. now that
网友回答
A. so that
B. even if
(答案→)C. in case
D. now that
解析：考查连词：A. so that为了，以至于，B. even if即使，C. in case以防，D. now that既然，句意：你最好提前到旅店预定房间，以防你到的时候没有房间了。选C。