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  • ______ is known to us all is that the old scientist, for ______ life was hard in the past, still works very hard in his eighties.
Question 1:
______ is known to us all is that the old scientist, for ______ life was hard in the past, still works very hard in his eighties.
A. As; whom
B. What; whom
C. It; whose
D. As; whose

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Complex Sentences - Test 10 | C1 – Advanced