问题补充:
The highway from Zunyi to Renhuai for about two years.
A. has opened
B. has been open
C. has been opened
D. opened
答案:
A. has opened
(答案→)B. has been open
C. has been opened
D. opened
解析:句意:从遵义到仁怀的高速公路已经开放大约有两年的时间了。For+一段时间表示谓语动词必须是持续的,be open 表示状态开放根据句意应用完成时,have/has been +形容词根据句意,故选B。