Question

The country life he was used to ________ greatly since 1992．

1. A.
   change
2. B.
   has changed
3. C.
   changing
4. D.
   have changed

Answer 1

B
解析：
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；
根据主谓一致原则，A、D两项被排除。