问题
选择题
_____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
答案：B
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