The role of change of husband to father,although difficult,doesn't seem so great as__of wife to mot
问题描述：
The role of change of husband to father,although difficult,doesn't seem so great as__of wife to mot
答案为什么用that,不用one
答
The role of change of husband to father,although difficult,doesn't seem so great as__of wife to mot
that 是替换的 the role of change ,因为为了避免重复,所以用that代替,这是固定用法.