It`s reported that Zhengzhou West Railway Station______by the end of last year A.was completed ...It`s reported that Zhengzhou West Railway Station______by the end of last year A.was completedB.had been completed

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It`s reported that Zhengzhou West Railway Station______by the end of last year A.was completed ...It`s reported that Zhengzhou West Railway Station______by the end of last year A.was completedB.had been completed

It`s reported that Zhengzhou West Railway Station______by the end of last year A.was completed ...It`s reported that Zhengzhou West Railway Station______by the end of last year A.was completedB.had been completed
It`s reported that Zhengzhou West Railway Station______by the end of last year A.was completed ...
It`s reported that Zhengzhou West Railway Station______by the end of last year
A.was completed
B.had been completed

It`s reported that Zhengzhou West Railway Station______by the end of last year A.was completed ...It`s reported that Zhengzhou West Railway Station______by the end of last year A.was completedB.had been completed
选B.
by the end of...到……末(结束时)为止,该短语往往用完成时.因指过去,故用过去完成时.

选B
解释:by the end of last year 这样的时间状语是经常用于完成时的标志性短语

B