◎ 题干
---- I ___________ Tom for three days. Is he ill?
---- I’m afraid so. The doctor said he needed ______________.
A.haven’t seen; to be operatedB.haven’t seen; to be operated on
C.didn’t see; operatingD.haven’t see; operating
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“---- I ___________ Tom for three days. Is he ill? ---- I’m afraid so. The doctor said he needed ______________.A.haven’t seen; to be operatedB.haven’t se…”主要考查了你对  【一般现在时】【过去进行时】【过去完成进行时】  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。