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题型：单选题 题类：常考题 难易度：普通
福建省长泰县第一中学、华安县第一中学2016-2017学年八年级下学期第一次月考（3月联考）英语试题
—Not really. we all tried our best, we lost it.
—Wait a minute. Don't cross the street __________ the traffic lights are green.
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