Write an email to your friend asking about him to return the book which he borrowed from you a month ago
Subject: please return my book
Hope you are doing well. Even when your pre- test exam starts? Mine will start next week. Dear friend, l badly need a rue grammar book at the moment that you had borrowed from me last month. I hope that the book has served you the best. But now, I need it as Nyi exams are approaching
Please, return the book as soon as possible. Convey my regards to your parents.