Leave your key with your neighbor you lock yourself out one day.(2012·辽宁)
A. as long as
B. even though
C. in case
D. as if
网友回答
A. as long as
B. even though
(答案→)C. in case
D. as if
解析：句意：留一把钥匙给你的邻居，以防哪天你把自己锁在门外。根据句意可知，此处用in case引导目的状语从句，in case表示“以防，免得”。