(2013·辽宁，29)To her joy，Della earned first the trust of her students and then of her colleagues.
A. that
B. one
C. ones
D. those
网友回答
(答案→)A. that
B. one
C. ones
D. those
解析：句意：Della先赢得了学生的信任，然后赢得了同事的信任，此处用于替代不可数名词trust，故用that。如果代替可数复数名词用those或the ones。