Things have changed quickly in the past decade and life in the country is better than _____used to be.为什么这里用it不用that?

问题描述:

Things have changed quickly in the past decade and life in the country is better than _____
used to be.
为什么这里用it不用that?

因为它的主语是life

译文:过去的10年里变化迅速,现在的生活比原来的好多了.这是个并列句,and后面的句子的主语是life,it 用来指代life,不能用that来指代life.