试题 试卷
题型：单选题 题类：常考题 难易度：普通
广东省深圳市罗湖区2018-2019学年八年级上学期英语期末考试试卷
—It's easy. Put dirty clothes into it and then press the power button.
—Wait a minute. Don't cross the street _______ the traffic lights are green.
—OK, Mary. I can.
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