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― I apologize for not being able to join you for dinner.

― ________. We’ll get together later.

A. Go ahead             B. Not to worry     C. That’s right           D. Don’t mention it

B  

解析:go ahead继续,用吧; not to worry别担心,不必发愁,没关系;that’s right对的; don’t mention it.不客气,不用谢。

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