One day, a little boy named Tim was playing with his toy truck in the park. He loved his truck so much. It was big and red. He pushed the truck up and down the hills, laughing all the time.
Suddenly, Tim's truck began to slip down a big hill. "Oh no!" he cried. He ran after the truck, but it was too fast. At the bottom of the hill, Tim was upset. He thought his truck was gone forever.
Just then, a friendly dog came by with the red truck in its mouth. "Woof!" said the dog, giving the truck back to Tim. Tim was so happy and said, "Thank you, dog!" The dog wagged its tail and ran away. Tim played with his truck again, with a big smile on his face.
