假设你叫Jack,通过因特网认识了笔友Tommy.用不少于5句话向你的笔友介绍自己,必须用上所给的提示词

Dear Tommy:
My name is Jack .I am 12 years .Although everyday I go to school on foot,I am not think is a bad thing.My favorite subiect is math,and I also have a other hobby that is play Violin.How about you
I will warting for your letter.
Yours
Jack