that 和 it 作代词时的区别比如 life in the twenty -first century is much easies than _used to be .应填that还是it?请说明理由!

问题描述:

that 和 it 作代词时的区别
比如 life in the twenty -first century is much easies than _used to be .应填that还是it?请说明理由!

it ,指代life
that指那,it指它
21世纪life比过去的它(那,或者那个都不合适吧)容易的多..