Paul is always late for school. It is eight ten in the morning. The students are having an English lesson in the classroom. Paul opens the door and comes in.
"Paul, why are you late for school every morning?" his teacher asks. "When do you leave home?"
"I leave home at seven forty-five." Paul answers.
"Is your home far from our school?" his teacher asks.
"No, about ten minutes' walk."
"Then why are you late?"
"Every day on my way to school I see a sign. It says: School! Go Slowly!"