Once upon a time, there was a boy named Mark. Mark was a pale little boy who liked to play outside. One day, he went to the park with his mom. They saw a big tree with a swing.
Mark's mom said, "Mark, do you want to play on the swing?" Mark was very happy and said, "Yes, please!" He played on the swing for a long time. The sun was shining and the birds were singing.
After a while, Mark's mom mentioned, "Mark, it's time to go home now." Mark felt sad but he knew it was time to leave. They walked home together, holding hands. Mark couldn't wait to come back to the park and play on the swing again.
