Keep yourself open we can experience the great joy that friendship can bring.
A. as if
B. so that
C. even though
D. ever since
网友回答
A. as if
(答案→)B. so that
C. even though
D. ever since
解析：句意：敞开心扉，这样我们就可以体验友谊带来的快乐。这里是so that引导的结果状语从句，as if“好像”，even though“即使”，ever since“自从”，所以选B。