Little Mary is a good girl. She began to go to school last year and now she's in Grade 2. Her home is not far from the school, but she is often late for class because she likes watching TV, and listening to the music in the evening and going to bed very late. So she can't get up on time in the morning.

This term Mr. White, Mary's uncle, works in her school. He teaches Grade 2 history. He is very strict with the students, of course, with Mary, too. He often tells Mary to follow the school rules and come to school on time. Today Mary got up late again. When she went to school, it was 8:15. Her uncle was waiting for (等待) her at the school gate (门口). "You are ten minutes late for the first class." Mr. White said angrily (生气地). "Why are you often late for class?" "Every time when I get to the street corner, I always see a sign (标志) . It says 'SCHOOL-GO SLOW!' " said Mary.