what shouid we do when the traffic light is red ,yellow or green?
问题描述:
what shouid we do when the traffic light is red ,yellow or green?
意思是啥?那How many lights are there?which side of the road shouid drivers drive on in china?
答
当路灯为红、黄、绿时,我们应做什么?
那有几盏灯?
在中国,驾驶员应在哪一边开车?