问题
选择题
I regret _____ you that we are unable to offer you a job.
A．informing
B．having informed
C．to inform
D．to informing
答案
答案：C
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。