Dear Ben,
Thanks a lot for your letter. It was wonderful to hear from you again. I’m glad you are ok. I’d like to answer all your questions.
My hobby is basketball but sometimes I play football with my friends like you. I have more than enough time for my hobby. My friends share my hobby, I and two friends of mine go to basketball training together.
Well, that’s all for now. Write me soon. Say hello to your parents and friends.
Best wishes,
(Сюда своё имя напишешь)