题目内容
【题目】When we look at a _______ light, we should _______.
A. red, wait B. red, to stop C. green, go D. green, going
【答案】B
【解析】
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题目内容
【题目】When we look at a _______ light, we should _______.
A. red, wait B. red, to stop C. green, go D. green, going
【答案】B
【解析】