Конечно, я помогу с написанием ответного письма. Вот пример, как это можно сделать:
Dear Anna,
Thank you for your letter! I’m glad you enjoy sports. In my country, the most popular sport is football. Personally, I love swimming because it helps me relax and stay healthy. I usually swim twice a week at our local pool. How about you? Do you have a favorite sport? Looking forward to hearing from you!
Best wishes,
[Ваше имя]
Надеюсь, это поможет!