Tom is said ___a new machine for our company,but l don't know when he will finish it.A.to design B.to be designing c.to have been designing D.to have designed

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Tom is said ___a new machine for our company,but l don't know when he will finish it.A.to design B.to be designing c.to have been designing D.to have designed
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Tom is said ___a new machine for our company,but l don't know when he will finish it.A.to design B.to be designing c.to have been designing D.to have designed
Tom is said ___a new machine for our company,but l don't know when he will finish it.
A.to design B.to be designing c.to have been designing D.to have designed

Tom is said ___a new machine for our company,but l don't know when he will finish it.A.to design B.to be designing c.to have been designing D.to have designed
选C 时态上是现在完成进行时态 表示到目前为止一直在进行的事情
句子的意思就是 据说TOM最近在设计一种新的计算机程序,但是我不知道他何时将完成.
强调到目前为止一直在做某事,进行时态.

可能是C

b

C现在完成进行时

是A

选B,据说Tom正在给我们公司修机器，但是我不知道他什么时候弄好

B