Betty: Good morning, Alan! You look pale, are you all right?
Alan: I'm OK, but I saw an accident. A boy was riding his bike and listening to music on the road.
Daming: That's very dangerous.
Alan: I was waiting to cross the road. While the lights were changing to red, a car suddenly appeared round the corner. It wasn't going fast, but it didn't stop.
Lingling: Did the boy stop?
Alan: No. And the driver was talking on his mobile phone.
Betty: So, did the car hit the boy?
Alan: No, I'm glad to say. The car stopped just in time, but the boy fell off his bike and hurt his knee.
Tony: That's too bad.
Alan: So when you're on your bike, think about the risk of an accident! Pay attention, stop at the red lights and… what else?
Betty: Don't ride too fast.
Daming: Don't ride side by side with your friends.
Alan: Anything else?
All: Don't listen to music!
