Dear John(numele prietenului, poti sa il schimbi daca vrei)
Thanks a lot for your letter! It's really nice hearing from you. Anyway, I don't really do much after school. I sometimes go to soccer practice, but only 3 days per week. On the other days, I just go home and do my homework, watch television or ride my bike, hang out with my friends, browse the internet a bit. I sometimes write stories, I sometimes read. That's all really! But I heard some of my friends go to some after-school clubs where they dance, sing, improve their english, do their homework or play team sports. I should try that, it's really boring at home!
I hope I helped you, John! What do you do after school? Good luck at school and I hope you will write me again soon.
Love,
*numele tau*