Dear [Friend's Name],
I hope this letter finds you well. Thank you for your lovely letter and for taking an interest in my reading habits. I usually read books in the evenings before going to bed. I have three Literature lessons per week in school, and I find them very enjoyable. Our school library is quite big, with a wide range of books to choose from. Thank you for asking about my reading routine! I always look forward to our next book discussion.
Warm regards, [Your Name]