问题补充:
The old man has a son and two daughters, treating him well, makes him sad.
A. none of them; which
B. and none of whom; that
C. none of whom; which
D. and none of them; that
答案:
(答案→)A. none of them; which
B. and none of whom; that
C. none of whom; which
D. and none of them; that
解析:第一空为独立主格结构,them为treating的逻辑主语;第二空考查定语从句,先行词指前面提到的事情关系词which指代整件事并在从句中做主语。句意:老人有一个儿子和两个女儿,他们待他不好这使得老人悲伤。