◎ 题干
—Where is our English teacher?
—She is in the classroom, _____ the exercises _________ the students have done at home.
A.explaining; /B.explaining; for
C.explained; toD.explained; from
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—Where is our English teacher?—She is in the classroom, _____ the exercises _________ the students have done at home.A.explaining; /B.explaining; forC.explai…”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。