问题补充:
To her joy, Della earned first the trust of her students and then of her colleagues.
A. one
B. ones
C. those
D. that
答案:
A. one
B. ones
C. those
(答案→)D. that
解析:考查指示代词。句意:让她高兴的是,Della先赢得了她的学生的信任,接着赢得了她的同事的(信任)。one泛指可数名词,意为“一个”;ones“一些”;those指代复数;that指代不可数名词。这里指代trust,trust是不可数名词,应该用that。故选D。