问题
选择题
(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
答案
答案：A
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。