单选题
5.
I don't know why she is looking at me______she knew me. I've never seen her before.
A、
as
B、
as if
C、
even if
D、
although
【正确答案】
B
【答案解析】
也可用as though。as if和as though两者意义相同，引导方式状语从句时，表示“似乎……，好像……”，从句谓语动词常用虚拟语气。
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