Jack wasn't saying anything，but the teacher smiled at him he had done something very clever.(2011·湖南)
A. as if
B. in case
C. while
D. thought
网友回答
(答案→)A. as if
B. in case
C. while
D. thought
解析： 句意：Jack什么也没说，但老师向他笑了笑，好像他做了件聪明的事情一样。as if意为“似乎，好像”，引导方式状语从句。