Dear [Имя подруги],
Thank you so much for your letter! I completely agree that sport is very important. It helps us stay healthy and makes us feel good. I play basketball with my friends a few times a week, and it’s a lot of fun! We sometimes participate in local competitions, which is exciting. How about you? Do you have any favorite sports besides swimming?
Looking forward to hearing from you!
Best wishes,
[Ваше имя]