Pensions are now viewed as a deferred payment of salary, money a worker is compelled to put away to take care of one’s later years. (A) a worker is compelled to put away to take care of one’s (B) that a worker is compelled to put away to take care of oneself in (C) a worker is compelled to put away to take care of oneself in (D) workers are compelled to put away to take care of them in (E) workers are compelled to put away to take care of themselves in
key E. 为什么B,C不对?是由于a worker不对吗?为什么?句中其他地方并没有暗示一定要用workers.