选词填空,使短文完整.（每空一词,有多余选项）
(orange,go,yellow,in,on,rule,a,are,road,rules,boat,three,there,is,green,stop)
You must know the traffic______if you walk _____a city.There______always ______lights.You can cross the street at a______light and you must ______ai a red light .The ______light means “Wait”.If you drive ______car,you must drive ______the right side of the______.