◎ 题干
         after a long walk,Tom called and said he couldn't come to the party.
[     ]
A. Having worn out  
B. Being worn out  
C. To be worn out  
D. Worn out
◎ 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“ after a long walk,Tom called and said he couldn't come to the party.[ ]A. Having worn out B. Being worn outC. To be worn outD. Worn out…”主要考查了你对  【过去分词】  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。