英语翻译People can go across the road when the traffic lights( )

people on foot can go across the road when___ when we go across the street we must ___the traffic lights.A you can walk across the road (when the traffic light is gree The traffic lights can tell us when____(cross)the road. You can go ____(cross) the street when the traffic lights ty if和when的区别在_____ the traffic lights turn green,you can go ac corss the road at traffic lights People often go across the road quickly.Often they can't see Can we across the road when the tra when you cross the road,emember ____ the traffic lights firs You mustn's cross the road when the traffic lights are red(改 it's not____to cross the road when the traffic lights are re