Charles Babbage is generally considered ______ the first com

Charles Babbage is generally considered ______ the first computer.
A.to invent   B.inventing
C.to have invented D.having invented
zhshwei_mdj 1年前 已收到1个回答 举报

mp33837473 幼苗

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C

不定式的动作发生在谓语动词之前,不定式要用完成时态。

1年前

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