Letters / Writing a personal letter: write letter to your friend to talk your past experience [7]

Dear Mien,
I'm glad to write letter to you.Today, I am going to tell you about my memorable past experience.It happened when I was at secondary school.I dropped out to go out with my friends.Finally, my parents knew that because my teacher called them to inform my absence.Dropping out of mine made them very sad and disapointed.When I went home, my parents offered me to sit down and asked me some questions.I was so anxious about answering their questions.They were angry with me and charged me.Since then, I have really been mature having clear thought before acting.And I was embrassed about that.The experience makes me more mature and let me know how important studying is.