◎ 题干
Tom didn't pass the exam, His mother is _____ about .      
[     ]
A. worry    
B. worried  
C. worries  
D. worrying
◎ 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“Tom didn't pass the exam,His mother is _____ about .[ ]A. worryB. worried C. worries D. worrying…”主要考查了你对  【分词】  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。