At crossroads,we always see the traffic lights.When the red light is on,we should ________ .When the green light is on,w

分类: 作业答案 • 2021-12-20 10:34:02

问题描述：

At crossroads,we always see the traffic lights.When the red light is on,we should ________ .When the green light is on,we can _____________.

答

At crossroads, we always see the traffic lights. When the red light is on, we should _stop_ . When the green light is on, we can _go_.