4 lighes,traffic,us,when,tell,go,and,to,when,stop,to,(.)连词成句

4 lighes,traffic,us,when,tell,go,and,to,when,stop,to,(.)连词成句 traffic traffic traffic traffic traffic traffic traffic traffic traffic The traffic lights can tell us when____(cross)the road. why couldn't they meet us at five o'clock? Because they were delayed by ___A.a heavy traffic B.heavy traffic C.some heavy traffic D.traffic being heavy答案是B 不知道为什么 It is ____for us to cross the street when the traffic lights are red空里要填什么... lights,traffic,us,when,tell,go,and,to,when,stop,to(.) lights,traffic,us,when,tell,go,and,to,when,stop,to,组句? light,traffic,us,when,tell.go.and,to,when,stop,to组成一句话 （）took us several hours to clear the snows and open the road to traffic. If the traffic lights were with us?的意思急 急