Dear Tracy, How about your life back in Britain? I’m writing this letter to express our thanks to you on behalf of the class. We enjoyed the great time when you stayed here. During last term, you helped us a lot in our English so we made great progress with English study. What’s more, all our classmates are very thankful to you for donating English books, which are surely very helpful in our study. We miss you and wish you a happy life in the UK. Thank you for your kindness again and we are looking forward to your visiting China again.