The lifestyle we were used to a lot these years. A. changingB. changedC. has changedD. be

问题补充：

The lifestyle we were used to a lot these years.

A. changing

B. changed

C. has changed

D. being changed

答案：

A. changing

B. changed

(答案→)C. has changed

D. being changed

解析：这些年,我们已经习惯了的生活方式改变了很多.结合语境可知本句描述的是现在已经完成的动作,故用现在完成时态.选C.