Dear sir : I am very glad that you are my teacher,You are one of the best teachers who I know .there are many good points what we should learn from you,such as kindness,patience,humor and so on.please forgive me that I had made so many mistakes which make you always angry.I really want to be a good student. You are my teacher and good friend, We are the lucky dogs that we have such teacher as you.finally,I hope you happy everyday! best wishes your student