.A. for the first time B. from time to time C. at that ti

2017-06-25 

来源：缤纷英语 

【www.junered.com--缤纷英语】

The world is changing _______________.

[ ]

A. for the first time
B. from time to time
C. at that time
D. all the time

查看更多缤纷英语相关内容,请点击缤纷英语