◎ 题干
The policeman asked the child _____ cross the street _____ the traffic lights turned green.    
[     ]
A. not, when
B. don't, before
C. not to, until
D. not, until
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“The policeman asked the child _____ cross the street _____ the traffic lights turned green. [ ]A. not, when B. don't, before C. not to, until D. not, until…”主要考查了你对  【不定式】【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。