----Do you hear that Mary quarreled with Lily this morning?
----Are you sure?But they acted nothing had happened.
A. as if
B. as long as
C. even if
D. so that
网友回答
(答案→)A. as if
B. as long as
C. even if
D. so that
解析： 本题答语的含义是他们的表现好像没有什么事发生，as if可以表示似乎，好像的含义，故本题选A。