冇帶书既道歉信，急

Dear Sir / Madam,30th November, 2010. Re: Forgetting to Bring My Text Book I write to apologize for not bringing back my text book to school yesterday. So I had to share the book with my classmate during the lesson.Then it would cause him/her some inconvenience. I know that it might also affect our studies. So I am sure it will not happen again. Finally, I would be grateful, if you should kindly accept my apology. With best regards, Yours respectfully, Chan Tai-man