________ is known to us all is that the old worker,for ________ life was hard in the past,still works hard in his seventies.
A.As;whom | B.What;whose |
C.It;whose | D.What;whom |
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________ is known to us all is that the old worker,for ________ life was hard in the past,still works hard in his seventies.
A.As;whom | B.What;whose |
C.It;whose | D.What;whom |