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
网友回答
A. this
B. that
C. one
(答案→)D. it
解析：本题考查it的用法。当不定式作宾语，同时又有自己的补足语时，常常用形式宾语it代替不定式，而把真正的宾语不定式后移。常用结构为：make/feel/find...+it+宾补（n./adj.）+to do sth.。