问题
选择题
As the busiest woman in Norton,she made_________her duty to look after all the other people’s affairs in that town.
A．this
B．that
C．one
D．it
答案
答案：D
本题考查it作形式宾语，代替to look after all the other people’s affairs in that town，其他选项均不可以充当形式宾语。