◎ 题干
He was late for the class because his alarm clock didn't ______.    
[     ]
A.go off
B.run off
C.take off
D.put off
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“He was late for the class because his alarm clock didn't ______.[ ]A.go offB.run off C.take offD.put off…”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。