题目内容

I regret _____ you that we are unable to offer you a job.

A. informing B. having informed  C. to inform D. to informing

C


解析:

regret to say/inform/tell表示很遗憾……,近似于I'm sorry to say. regret doing表示对发生的事后悔,懊悔或惋惜。

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