问题
选择题
.In my opinion, life in the twenty-first century is much easier than _______.
A．that used to be
B．it is used to
C．it was used to
D．it used to be
答案
答案：D
搜题请搜索小程序“爱下问搜题”
.In my opinion, life in the twenty-first century is much easier than _______.
A．that used to be
B．it is used to
C．it was used to
D．it used to be
答案：D