Question

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

A.As; whom       B.What; whose

C.It; whose     D.What; whom

Answer

B

【解析】考查名词性从句和定语从句。“____ is known to us all”在句中作主语，故应用what引导名词性从句，在句中作主语。“____ is known to us all is that the old worker still works hard in his seventies”是句子主干，“ for _____ life was hard in the past”在句中作定语，其先行词为the old worker，关系词在定语从句中作定语，故应用whose。