it's reported that Nanjing South Railway Station__at the end of the month.A.has been completed B.is completed C.was completed D.will be completed选什么,为什么?

Question

it's reported that Nanjing South Railway Station__at the end of the month.
A.has been completed B.is completed C.was completed D.will be completed
选什么,为什么?

Answer 1

应该选 D.will be completed
因为火车站竣工这件事,要么是已经发生,要么是还未发生（将要发生）,已经竣工是过去时,将要竣工是将来时,不可能是现在时,所以A（现在完成时）、B（现在时）要排除.
至于C（过去时）还是D（将来时）就要看句中提示的时间.句中的时间状语是at the end of the month,the month 加了定冠词the,表示是当前这个月（也就是本月）底,显然是还没到的一个时间,所以要用将来时,因此再排除C,只能选 D.will be completed.
全句意思是：据报道,南京铁路南站将于本月底竣工.