问题补充:
The retired workers were invited to the company, surprise,changes had been so great over the years.
A. whose
B. who
C. to whom
D. to whose
答案:
A. whose
B. who
C. to whom
(答案→)D. to whose
解析:考查介词加关系代词引导的定语从句。让某人惊讶的是,用to one’s surprise结构,排除A,B;先行词是workers,在定语从句surprise,changes had been so great over the years.中作名词surprise的定语,要用whose修饰,所以选D。