试题 试卷
题型：单选题 题类：常考题 难易度：普通
新目标英语2017-2018学年八年级上册Units 1—5单项选择专练
—Wait a minute. Don't cross the street _______ the traffic lights are green.
—Their teachers can't tell them from each other sometimes.
—But you depend on her too much. You should learn to look after yourself.
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