There is a widespread belief in the United States and Western Europe that young people have a smaller commitment to work and a career than their parents and grandparents and that the source of the change lies in the collapse of the "work ethic."

(A) a smaller commitment to work and a career than their parents and grandparents

(B) less of a commitment to work and a career than their parents and grandparents

(C) a smaller commitment to work and a career than that of their parents and grandparents

(D) less of a commitment to work and a career than their parents and grandparents had

(E) a lessening of the commitment to work and a career that their parents and grandparents had

D,想问一下had 改did行不行?当初就是觉得用had 奇怪才没选的,因为have 在这里是实意动词,比较的时候不是应该用do did之类的代替吗?请指教

UP.

选对了D.但LZ提的问题还真没考虑.呼唤NN...

好吧，那我先来说一下我的想法

比较对象是young people和their parents and grandparents
(A) (B) (C)如果没有补出助动词，无法看出到底是主格相比还是受格相比，砍

(D)中使用had表示过去时间，句意是：”现在” young people have less of a commitment to work and a career和”过去” their parents and grandparents had have less of a commitment to work and a career相比