At crossroads,we always see the traffic lights.When the red light is on,we should ________ .When the green light is on,we can _____________.
人气：451 ℃ 时间：2020-04-30 07:29:59
解答
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_.
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