——— is known to us all is that the old scientist, ——— life was very hard in the past,
———isknowntousallisthattheoldscientist,———lifewasveryhardinthepast,stillworksveryhard...
——— is known to us all is that the old scientist, ——— life was very hard in the past, still works very hard, even in his eighties.
A. As; whom B. It; whom C. What; whose D. That; whose 展开
A. As; whom B. It; whom C. What; whose D. That; whose 展开
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