In China，learning some safety knowledge(知识) is becoming more and more important now．How should you keep yourself safe？

____．

At school：

When students around you begin to push，try to hold onto something，or stay in a safer corner____．

On your way home or to school：

Wait for the the green traffic light．____．Wear clothes  in bright colors，so the drivers can see you easily．

____：

Stay calm and leave quickly．To keep clear of smoke (烟雾),use a piece of wet cloth to cover your mouth and nose．

For riding on the escalator（自动扶梯）：

____．You should hold onto handrails（扶手） and stand on the right side of the escalator，because right arms are stronger．

A.When there's a fire．

B.Here are some advice for you．

C.It is dangerous to run up and down on the escalator．

D.If you see a car coming，don't across until it really stops．

E.Find out what's wrong with him

F.If you fall down in a crowded place，cover your head with both hands．