◎ 题干
I didn’t know ______.
A.when would the train arrive B.where could I get the book
C.what has been done D.who left the message
◎ 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“I didn’t know ______.A.when would the train arriveB.where could I get the bookC.what has been doneD.who left the message…”主要考查了你对  【宾语从句】  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。