Dear Teacher,
I am sorry that I fail to submit my homework on time, because I forgot the deadline of it/ I left it at home./ I was sick/ I have a family emergency (my mom is sick...).
I would like to offer my heart-felt apologies for breaking your rule on homeworks.
I know I did made a grave error. I promise never, ever to repeat the mistake.
I would appreciate it if you would give me one more chance to hand in the homework. Thank you
----------
版本二，搜到的
A Letter of Apology
Dear Mr. Wang,
I am writing to apologize for my late homework. The paper which you have assigned to us last Monday was due this Friday, but to my regret, I haven’t even started it yet. I feel really sorry for not handing in the paper on time and for the inconvenience it would bring to you.
I have caught a serious cold last week and the doctor asked me to stay in bed for a week since I was very weak and the weather was very cold these days. Therefore, I couldn’t go to the library to get the necessary referential information which was needed for my paper. As a result of this, I have not started writing the paper yet and could not hand it in on time.
Fortunately I have finally fully recovered. I will finish the paper as soon as I can and ①try my best to hand in homework on time in the future.
Sincerely yours,
Li Ming
温馨提示：答案为网友推荐，仅供参考