Leave your key with your neighbor _you lock yourself out one day.A. as long asB. in case C

Leave your key with your neighbor _you lock yourself out one day.
A. as long as
B. in case
C. even though
D. as if

A. as long as(答案→)B. in case C. even thoughD. as if解析：A. as long as只要 B. in case以防万一 C. even though即使 D. as if好像；句意：将你的钥匙留一把给你的邻居，以防万一哪一天你将你自己锁在屋外了。故选B

这下我知道了