Dear Mary ,
In this letter I would like to convey my heartfelt thanks to you for your books about band four to me. The book is very useful especially for my reading and writing
.I want to buy this book for a long time. Your generous help and ter care made me feel warmly.
I will try my best to prepare the text for b four. I have made a plan to finish reading this book before the exam coming.
As the old saying goes, where there is a will there is a way. please don’t worry about me .I believe I can pass the exam. I will tell you the good news at the first time!
I feel obliged to thank you once more.
sincerely yours, Tom