______ is known to us all , the old scientist,______ life was hard in the past, still works hard in his eighties.
A.It; whom | B.As; whom | C.As; whose | D.What; whom |
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______ is known to us all , the old scientist,______ life was hard in the past, still works hard in his eighties.
A.It; whom | B.As; whom | C.As; whose | D.What; whom |