Chongqing a lot in the past few years.Ahas changed B. changed C. is changing

问题补充：

Chongqing a lot in the past few years.

A．has changed B. changed C. is changing

答案：

解析：句意：在过去的几年里，重庆发生了很大的变化。in the past few years.是现在完成时的时间状语。故选A。

考点: 考查动词时态的用法。