◎ 题干
When _____ help, one often says "Thank you." or "It's kind of you."
[     ]
A. offering
B. to offer
C. to be offered
D. offered
◎ 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“When_____ help, one often says "Thank you." or "It's kind of you." [ ]A. offeringB. to offer C. to be offeredD. offered…”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。