◎ 题干
The mother often tells her son to be a good boy, warning him to ____ trouble.
[     ]
A. hold back from
B. keep out of
C. break away from
D. get rid of
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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 mother often tells her son to be a good boy, warning him to ____ trouble. [ ]A. hold back fromB. keep out ofC. break away from D. get rid of …”主要考查了你对  【动词短语】  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。