I,Read the passage.When answer the puestions

Yesterday,when I was riding along a busy street,I saw an accident.A woman was knocked down when she crossed the street at a zebra crossing.Many people stopped to offer their help.A policeman arrived and asked a young man to telephone for an ambulance.While waiting for the ambulance,the policeman and some people tried to stop the bleeding.They used a handkerchief to cover the wound,then put pressure on it and held it tight.They tried to talk to her in order to keep her awake.After about ten minutes,the ambulance arrived and the woman was taken to the hospital.

1. Who was knocked down on the street?
2. Who telephoned for an ambulance?
3. What did the policeman and some people try to do?
4. What did people use to cover the wound?