◎ 题干
_______ the meeting room,he found all the parents already _______ there.
A.To enter; sittingB.Stepping into;to seat 
C.Entered; seatD.Entering;seated
◎ 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 room,he found all the parents already _______ there.A.To enter; sittingB.Stepping into;to seat C.Entered; seatD.Entering;seated…”主要考查了你对  【现在分词的被动式】【现在分词】【不定式的被动式】【过去分词】  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。