As the busiest woman in Norton,she made_________her duty to look after all the other people’s affair

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

答案及解析： D

解析：

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。