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
为什么选D,不选C呢?是不是commitment不能用small来形容?那么D最后那个had如何解释?前面的have是时以动词,那么后面应该加did,从什么地方看出要用过去完成时呢? |