[单选题]Jack wasn't saying anything,but the teacher smiled at him ( ) he had done something very clever.

A

as if

B

in case

C

while

D

though

正确答案:A
题目解析

as if——好像;in case——以防;while——然而;though——尽管。结合句意可以确定表示“好像”的as if最符合句意,故选A。

句意:杰克什么也没说,但老师对他笑了笑,好像他做了一件非常聪明的事似的。

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