题目

The country life he was used to ______ greatly since 1992. A. change        B. has changed     C. changing    D. have changed 答案：B 解析: B 考查主谓一致。分析句式找准主语为life主语，he used to定语修饰life，按照时态since决定时态，用现在完成时,故答案为B.

查看本题答案和解析