Our life greatly in the last ten years.A. changed B. has changedC. have changed D. is cha

问题补充：

Our life greatly in the last ten years.

A. changed

B. has changed

C. have changed

D. is changed

答案：

A. changed

(答案→)B. has changed

C. have changed

D. is changed

解析：句意：在过去的十年中我们的生活发生了巨大的改变。结合语境可知本句描述的是一直持续到现在的动作，故用现在完成时态。句子主语Our life表达抽象含义，故谓语动词用单数，选B。