【题目】I regret _____ you that you fail to pass the exam, so you have to take a make-up examination.
A. telling B. having told
C. to tell D. to have told
在线课程【答案】C
【解析】
考查regret用法。regret to do sth遗憾要做某事，后面常常接tell,say等词；regret doing sth遗憾做了某事；结合句意可知C正确。句意：我遗憾的告诉你，你没有通过考试，所以你必须补考。