◎ 题干
  The professor requested that all the students ________ the reports at once.
A.would hand in B.handed in
C.hand in D.handing in
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“ The professor requested that all the students ________ the reports at once.A.would hand inB.handed inC.hand inD.handing in…”主要考查了你对  【虚拟语气】  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。