Hello, Mr Zhang. We have finished the first year in our middle school. I want to say something from my heart. First thanks for your help with my study. You always encourage me to keep up .Thanks for your strict teaching .You are always strict with us and in your work.However ,you can often play games with us in class, which made the class interesting .I will never forget you and your class. Finally wish you happy and healthy forever! Yours. Helen.