dear prof. wang, i m writing to ask you to excuse me for not being able to keep our appointment. i do know that this is very impolite and must have caused you much trouble. i do reckon that at present any explanation is pale and futile.
道歉信模板 Dear _______ , ?、?I am excessively sorry to tell /say to you that _______(直接說出道歉事由). ② Now , I am writing you this letter of apology to show my deep regret . ③ Please accept my sincere apology . ④ I hope you will understand me and