be considered to do sth是一个固定结构
然后又是过去完成式
所以用have done sth
Charles baggage is generally considered ____the first computer.
Charles baggage is generally considered ____the first computer.
这是备选答案.标准答案是c A.to invent B.inventing C to have invented D.having invented
想问问为什么,我个人认为是d
这是备选答案.标准答案是c A.to invent B.inventing C to have invented D.having invented
想问问为什么,我个人认为是d
英语人气：706 ℃时间：2020-04-01 02:35:20
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