问题补充:
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
答案:
A. As; whom
(答案→)B. What; whom
C. It; whose
D. As; whose
解析:本题考查连接代词。is known to us all 是主语从句,排除AD,第一个空上的词要做主语,第二个空上的词做for的宾语,代替the old scientist。
【标签】复合句