[ The teacher looked at Boxer and she looked at Mark. "No, Boxer," she said, "a puppy cannot come to school." Mark went to the gate with Boxer. "Go home, Boxer," he said. "Go home." Children were playing football. Children were playing on the jungle gym. Boxer was at the gate again. He barked at the children playing football. He barked at the children on the jungle gym. He barked and barked and barked. ]