There great changes in our city in the past 10 years.A. wereB. hadC. have beenD. have had

问题补充：

There great changes in our city in the past 10 years.

A. were

B. had

C. have been

D. have had

答案：

A. were

B. had

(答案→)C. have been

D. have had

解析：句意：在过去的里，我们的城市发生了很大的改变。in the past 10 years是现在完成时的标志词，用现在完成时，故选C.