◎ 题干
He is said _____ a new machine recently, but I don't know when he will make it.

A. to design
B. to be designed
C. to have designed
D. to have been designing
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“He is said _____ a new machine recently, but I don't know when he will make it. [ ]A. to design B. to be designed C. to have designed D. to have been desig…”主要考查了你对  【不定式的完成式】【不定式的被动式】  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。