The country life he was used to greatly since 1992.A. changeB. has changedC. changingD.

问题补充：

The country life he was used to greatly since 1992.

A. change

B. has changed

C. changing

D. have changed

答案：

A. change

(答案→)B. has changed

C. changing

D. have changed

解析：句意：自从1992年他习惯的乡村生活已经改变了。注意分析句子结构。he was used to为一个定语从句，to（介词）的宾语为country life，因此句子的真正主语是the country life，空白处作谓语动词，故C项被排除；时间是since 1992.所以和现在完成时连用，根据主谓一致原则，A、D两项被排除。选B。