◎ 题干
—It's 10 o'clock now. I must go.
—It's raining heavily outside. Don't leave ______ it stops.

[     ]

A. since
B. until
C. when
D. because
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—It's 10 o'clock now. I must go. —It's raining heavily outside. Don't leave ______ it stops. [ ]A. since B. until C. when D. because …”主要考查了你对  【从属连词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。