◎ 题干
— Look, the light in the living room is still on.
—Oh, I forgot _______.
A.turning it offB.turn it offC.to turn it offD.having turned it off
◎ 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“ — Look, the light in the living room is still on. —Oh, I forgot _______.A.turning it offB.turn it offC.to turn it offD.having turned it off…”主要考查了你对  【实义动词的单数第三人称形式】【实义动词】【动词短语】  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。