Dear Ben,
I write this letter for you to tell you about strange thing which happend with me last week.
I was just sitting and reading a book. Hat came into the room. It moved on their own! I was so surprised. I was afraid because I thought that my hat is alive! I jumped up on a chair. I've been thinking what to do. Meanwhile hat ran across the floor. Then hat jump on me. I closed my eyes and ... and when I opened my eyes I saw my cat. It turns out that he was under my hat!
Were there any strange things with you?
With best wishes,
your (ваше имя)