_______ in the storybook that he had bought not long before, the boy didn’t notice his mother go into his room.
A. Losing
B. Lost
C. Having lost
D. To be lost
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◎ 解析
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◎ 知识点
根据n多题专家分析，试题“_______ in the storybook that he had bought not long before, the boy didn’t notice his mother go into his room.A. LosingB. LostC. Having lostD. To be lost…”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。
◎ 相似题
与“_______ in the storybook that he had bought not long before, the boy didn’t notice his mother go into his room.A. LosingB. LostC. Having lostD. To be lost”考查相似的试题有：
