Hello, Bob!
My favorite season is summer, because it sunny. I don't go to school. I can play with my friend all day! I can ride my bike, swim, dance, jump , sleep and so on when I want it! I don't have to do my homework because I don't go to school.
I think all children likes summer!
Summer is the best season!
Sam (или любое другое имя человека, который писал это письмо)