用括号内动词的正确时态填空

问题描述:

用括号内动词的正确时态填空
the life we were used to _(change) since we moved to the big city
并说明理由,

has changed 已经变化了
现完+since+过去式
意思是"自从搬进了大城市,我们习惯的生活已经改变了"