The country life he was used to greatly in the past decadeA. changeB. has changedC. chan

问题补充：

The country life he was used to greatly in the past decade．

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：考查时态题。本题的关键词在in the past decade在过去的十年里；该短语与现在完成时连用，故B正确。