The country life he was used to greatly since 1998. A. changeB. has changedC. changing D.

问题补充：

The country life he was used to greatly since 1998.

A. change

B. has changed

C. changing

D. had changed

答案：

A. change

(答案→)B. has changed

C. changing

D. had changed

解析：考查时态。句中he was used to为定语，根据时间状语since 1998，可知用现在完成时。选B。