◎ 题干
When he looked up,he suddenly found himself ______by a group of teenagers,____looked at him anxiously.
A.to be surrounded;which
B.surrounded;who
C.be surrounded;who
D.having been surrounded;which
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“When he looked up,he suddenly found himself ______by a group of teenagers,____looked at him anxiously.A.to be surrounded;whichB.surrounded;whoC.be surrounde…”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。