There great changes in our hometown in the past fifteen years.A. has beenB. have beenC. wa

问题补充：

There great changes in our hometown in the past fifteen years.

A. has been

B. have been

C. was

D. were

答案：

A. has been

(答案→)B. have been

C. was

D. were

解析：在过去的十五年里我们的家乡发生了巨大的变化。根据 in the past fifteen years可知，本句应用现在完成时have/has +过去分词；由于真正的主语是great changes，故用have，所以本题选B。