On April 28,2013,the Leheledu Theme Park in Yongchuan, whose most construction has been finished, ,being one of the biggest centers for entertainment in Chongqing.
A. opens
B. was opened
C. has been opened
D. had been opened
网友回答
A. opens
(答案→)B. was opened
C. has been opened
D. had been opened
解析：句意：在2013年4月28日永川的Leheledu的主题公园对外开放了，它的绝大多数建筑已经完工，成了重庆最大的娱乐中心之一。这里whose引导的是定语从句；空格处缺少的谓语动词，根据时间状语，动词应该用过去式，故选B。