◎ 题干
At the railway station,  the mother waved goodbye to her daughter until the train was ____.
[     ]
A. out of sight        
B. out of reach        
C. out of order        
D. out of place
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“At the railway station,the mother waved goodbye to her daughter until the train was ____. [ ]A. out of sight B. out of reach C. out of order D. out of place…”主要考查了你对  【介词和介词短语】  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。