Question

　　　is known to us all is that the old worker, 　　　life was hard in the past, still works hard in his seventies.

A．As; whom	B．What; whom
C．It; whose	D．What; whose

Answer 1

D

选D。考查定语从句和名词性从句。分析句子成分可以看出, 第一空使用what引导主语从句, 第二空使用whose引导一个非限制性定语从句。
【变式训练】
　　　is known to us all, the old worker, 　　　life was hard in the past, still works hard in his seventies.
A. As; whom             B. What; whom
C. It; whose               D. As; whose
选D。考查定语从句。分析句子成分可以看出, 第一空使用as引导非限制性定语从句, 第二空使用whose引导一个非限制性定语从句。