◎ 题干
_____ Mom had asked Jack to close the window  before he went out,______ he forgot to do it.
A.Though; /B.Though; but
C.Till; /D.Until; then
◎ 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“_____ Mom had asked Jack to close the window before he went out,______ he forgot to do it.A.Though; /B.Though; butC.Till; /D.Until; then…”主要考查了你对  【并列连词】【从属连词】  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。