英语道歉信丢失了图书管的书

Dear George
I am really sorry that I lost your books which you lent it to me two days ago. It is really a wonderful book. I am going to finish reading it next month and then give it back to you. Suddernly I couldn't find it yesterday evening and I tried my best to look for it, but I coun'd find it. I am very sad and I will buy the same book and give it to you. I apologize for that.
Yours
Li Lei
自己的习作，看对你是否有帮助哟，祝你学习进步，更上一层楼！(*^__^*)

　　dear george,
i am terribly sorry that i lost the book you lent me last night. i proposed to return it next month as soon as i finish reading it. i know it might mean a lot to you. i will try to..

　　Dear George ,
I'm very sorry that I can't find the book you lent to me few days ago . It's really a wonderful book , I was going to return it to you when I finish reading next month . Suddenly I couldn't search it any more last evening though I've tried my best on it . I am in sadness but I will get a same but new one to you soon . Apologize for that to you .
your best friend
XXX
（适合初、高中生）