Hello Hoa,
Do you still remember me? I'm your old classmate Quang. It's been a while since we both talked. Probably because of the geographical distance, the gender gap, and many other reasons .... that we are getting further apart .... but ... you don't know I remember you a lot, remember our memories, remember the day
that. I still remember clearly that it was Wednesday, my parents were all on a business trip, I had a fever at home and couldn't go to class. All morning I went through the fever painfully with no one around. Fortunately with you, you don't know understanding that feeling, like when I was in despair and suddenly caught a glimmer of hope. That afternoon, because he didn't see me going to school, he came to visit me and found out that I was sick, he took care of me. I am very touched. no matter what happens in the future I will always miss you, remember that day when I was the most lonely and desperate with you by your side. 

           Quang

Dear bao anh 

     I'm fine. And you? I'm very glad writing letter to you. I will tell you about one of my most memorable past experiences. Last month, my mother told me to bring a raincoat before I went to school but I did not obey. When I went home, suddenly it rained. It rained more and more heavily. I decided to go home in rain without raincoat. That night, I'm seriously ill. I was pity when seeing my parents looked after me and worry about me.
Write to me as soon as possible.
      Your friend,
        thành