Suppose that you cannot return the book to Ma Bin in person for some emergency and will ask someone else to return it. Write a note in about 100 words to inform him of it. Do not sign your own name at the end of your note， using “Li Ming” instead.

Dear Ma Bin，

I would like to apologize for my not being able to return in person the book you lent me last Wednesday. You know， I have done a parttime job as a private teacher. Originally the lessons were scheduled on Saturday. But it happens that my student is going to take part in a football match this Saturday， the day after tomorrow and so the lesson is shifted to tomorrow evening， which renders me to meet you then.

But don‘t worry. I have asked a classmate to return that book for me. She is a pretty girl with short curly hair， and will go to your dormitory at 7：00 tomorrow evening.

Thank you again for your book. It is really helpful to my English assignment.

Yours，

Li Ming