◎ 题干
Sometimes, _______ we show our gratitude for a person is reflected in the kind of food we serve him or her.

A. when
B. whether
C. why
D. how
◎ 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“Sometimes, _______ we show our gratitude for a person is reflected in the kind of food we serve himor her.[ ]A. whenB. whetherC. whyD. how…”主要考查了你对  【连接副词】【主语从句】  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。