Dear Liu Ming, I'm writing this letter to express my thanks to you for all that you have done for me in the three junior high school years. During the past three years,we have studied together,taken sports together and taken part in all kinds of activities together.With the help between each other, very deep friendship have developed among us. What I will always remeber is the great trouble you have taken to help me with my maths---I am not afraid of it now.Please allow me to say"Thanks" to you for all these from the bottom of my heart. Yours, Liu Yu