the three colours of the traffic lights arn( )and ( )补全句子

the traffic lights ( )the traffic lights Walk the street and turn right the traffic lights the traffic lights还是the traffic light The traffic lights ________ green and I pulled away. There are three traffic lights in the city(对three进行提问) there are three traffic lights in the city（对three提问） 读句子用单词的适当形式填空look at the traffic lights and------(stop)at th corss the road at traffic lights Look the traffic lights.哪里错了 the traffic lights are green.we can[ ] the traffic lights的意思是?