Dear teachers :
I will finish primary school and go tomiddle school. Thanks for you teaching me for so many years. I will bear in mind you to teach me.I think of very much in the time of the primary school. I will stduy hard. I will recompense you. As you has often remarked, one is never too old to learn.I will often come back to see you.
XXX(你的名字)
亲爱的老师:
祝好
XXX(你的名字)