问题
选择题
----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
答案
答案：A
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。