I am the Chinese student who stayed at your house druing my vacation in Canada. Upon arriving home, I found I had forgotten to return the music CD I borrowed from you. Therefore, I am wrting this letter to express my sincere apologies for my carelessness.

　　As I understand this CD is one of your favorites, I will try my best to send it back to you as soon as possible. So, could you please tell me where I should send it to? Or shall I send it directly to the place where I stayed? According to the regulations of China’s Postal Services, it will take almost a week to reach Canada.

　　I am sorry for the inconvenience I may have caused you. Thank you again for the hospitality you offered me during my stay there. Wish you all the best.

　　Yours sincerely,

　　Li Ming

（二）Dear Bob,

　　I am writing to express my apology to you.

　　Several days ago, I borrowed your music CD when I lived in your house. Unfortunately, after I came back from Canada, I found it in my luggage. I was in such a hurry that I forgot to return it to you. I will send it to you by post or express as soon as possible. If necessary, I will compensate for any troubles it may cause.

　　Once again, I feel so sorry for any inconvenience caused. Please accept my apologies.

　　Sincerely yours,

　　Li Ming