英语作文语法检查明天要考试啊,帮个忙啊,有错请订正Everyone have hobbies.My hobby is c

Everyone has hobbies. My hobby is collecting stamps. I collect all kinds of stamps, mostly Chinese stamps. I have 2300 of them now. I started collecting stamps when I was in primary school. I enjoy collecting stamps because I can learn many things from these stamps. My mother says I have to stop now. I plan to have many pen pals and exchange letters with them, so I can collect more stamps from the letters.
Hobbies can make someone happy ,so I like them. And I have many other hobbies. Do you agree with me?
总体不错,有几处小错误,已更改.