Send an e-mail to your friend asking him to return the book.

Your friend has borrowed one of your important books. Your examination is near. So you need the book badly. Now, send an e-mail to your friend asking him to return the book.

To: ruman@hotmail.com

Subject: Regarding the return of a book. 

Dear Ruman,

Your letter, carrying many good news, is just to hand. I am at happy to hear the news of your brilliant result. My final examination is near at hand. I am at present badly in need of the book "Advance Learner's Communicative English" by Chowdhury & Hossain which you borrowed from me long ago. Since you do not need the book at present, I request you to kindly return it as soon as possible. If you nrrd it again, I will give it to you after examination.

Hoping you to be hale and hearty.
Yours ever,
Nawfel.