Amy: Tom, let's draw pictures.

Tom: OK. I like drawing very much.

Amy: Let's draw pictures of traffic rules.

Tom: OK. Look at my picture. It tells you, "Stop! Don't go!"

Amy: My pictures are traffic signs (标志). Go straight on! Turn left! Turn right!

Tom: I like your pictures, Amy. And I learn a lot.

Amy: Really? That's good.

I'm Tom. I am a pupil. I was late for school this morning. It was 8:15 when I got up this morning. I quickly ran out and got on my bike. I rode very fast. When I reached a crossing, the traffic lights were red, but 1 didn't stop my bike. A policeman stopped me, and asked me why I didn't stop. I told him I was late. He told me, "You should stop when the traffic lights are red and you can cross when the traffic lights are green. There are a lot of cars on the road. It's dangerous." And then he let me go. Safety(安全) is important. We must obey (遵守) the traffic rules at any time.

  in the library.

  easy to learn English well?

  on the street.

  at the red light.