Mrs Green had a young dog. He often helped her buy newspapers. One winter evening, the dog went out to play. It was snowing heavily. He didn't come back. Mrs Green shouted his name. But still the dog didn't come back. So she called the police and told them a lot about her dog. "My dog is very clever. He always goes out and comes back soon. Sometimes he plays with his friend. He can buy a newspaper. He almost talks."" The policeman was tired and said, "I think you'd better put your telephone down. Maybe he is going to call you."