◎ 题干
Is this the reason _______ at the meeting for his carelessness in his work?
A.he explained
B.what he explained
C.how he explained
D.why he explained
◎ 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“ Is this the reason _______ at the meeting for his carelessness in his work?A.he explainedB.what he explainedC.how he explainedD.why he explained…”主要考查了你对  【状语从句】【限制性定语从句】【主语从句】【同位语从句】  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。