Dear Bob,
I am writing to makean apology to you for I forgot to return a music CD which I borrowed from youlast week. Yesterday I have come back from Canada and I found it in my luggage.I am so sorry that you cannot listen to it at present.The CD which Iborrowed from you is made in Canada, so I believe you can find another one inyour local store. How about your buying another CD by yourself and I will payfor it? If you cannot find the similar one, I would send it back to you througha post office. And if there are any other solutions you like, please let meknow.I am sorry again formy carelessness. Looking forward to your reply.
Yours sincerely,
Li Ming
Dear professor Jackson：
I am indeed very sorry that I missed the examination you gave on Moby-Dick last Wednesday. I feel badly about it and want you to know what happened.
On my way to class that day，I had a flat tire，and I had to go with the mechanic when he repaired it. It took me more than one hour to get it done. A copy of the bill is enclosed.
I sincerely hope you can accept my apologies and understand my situation. I would appreciate your allowing me to take a make up examination. I willeto your office during your office hour on Monday to discuss this possibility with you. Once again，I''m sorry fro any inconvenience caused.
Sincerely yours，
Alice
Dear Judy,
I’m writing the letter for the purpose of making a sincere apology to you for my carelessness. When I arrived home, I found I had forgotten to return the music CD that you lent me. I fell awfully sorry for this. As I understand this CD is one of your favorites, I’ll try my best to send it back as soon as possible.
Please accept my heartfelt apology. I genuinely hope you can forgive me for my carelessness.
Yours truly,
Li Ming