Ответ:

Dear, *имя друга*

Hi! Today at school in physical education played volleyball. This is my most lovely kind of sport, because volleyball is very active and you are constantly in motion. Also volleyball develops mindfulness. You must always be on the alert so that the ball doesn’t fly into your face. It is also very bewitching. You should to observe sportsmen's traffic.  This technique is amazing.

I hope that you will appreciate this kind of sport and write me soon about your  impressions.

Your friend,

*твое имя*