_______is known to us all that the old scientist,for_____life was hard in the past,still works hard in his eighties.
A.It;whom B.As;whom C.As whose D.What;whom
_______is known to us all that the old scientist,for_____life was hard in the past,still works hard in his eighties.
A.It;whom B.As;whom C.As whose D.What;whom
A
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