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Recently, there have been many occasions ______ you have attended events on your own.

A. where B. which C. when D. why

C

【解析】

试题分析:考查定语从句。定语从句“you have attended events on your own”不缺少成分,排除B;occasion时刻,场合,机会,先行词指时间,且定语从句不缺少主语或宾语,用when引导定语从句,故选C。

考点:考查定语从句

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