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We don’t know _______ the meeting will be held soon.

A. when              B. what              C. whether      D. since

C

【解析】本题考查连词。A项意为“什么时候”;B项意为“什么”;C 项意为“是否”;D项意为“后来”。句意“我们不知道这个会议是否一会举行”。故选C。

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