Once upon a time, there was a girl named Lily. Lily had a doll that she loved a lot. One day, Lily and her mom went to the park. Lily was worried because she did not want to lose her doll. Her mom said, "Don't worry, just bring your doll with you and hold it tight."
At the park, Lily played with her doll. She was happy and forgot her worry. But then, a big dog came running. The dog saw Lily's doll and wanted to play too. The dog took the doll from Lily and ran away.
Lily was very sad and cried. Her mom tried to find the dog and the doll, but they were gone. Lily learned to be more careful with her things. From that day on, Lily always remembered her lost doll and the big dog that took it away.
