◎ 题干

—The meeting is about to start, yet the speaker hasn’t turned up.
— No one knows ____.
A.what the matter isB.what is the wrong
C.what is the matterD.how matter stood
◎ 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“—The meeting is about to start, yet the speaker hasn’t turned up.— No one knows ____.A.what the matter isB.what is the wrongC.what is the matterD.how matter s…”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。