单选题
I said nothing, ______ I had no idea about it.
A、
before
B、
though
C、
as
【正确答案】
C
【答案解析】
[解析] 本题考查连词的用法。根据句意来说,后边一句是前边一句的原因,before是介词,表示时间;though“虽然”,表示转折;as表示原因,所以答案为C。[知识拓展] as还可表示“当……时候”,如:They laughed and talked as they were walking.
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