Question

The construction of the two new railway lines ________ by now．

[　　]

A．

has been completed

B．

have been completed

C．

have completed

D．

has completed

Answer 1

答案：A
解析：

本题考查完成时态的被动语态。句意是“两条新铁路线的建设到现在为止已经竣工了”。主语The construction of the two new railway lines和谓语complete之间是被动关系，所以排除C项和D项，construction是不可数名词，谓语动词用单数，因此A项正确。

提示：

谓语动词的单复数要由主语决定，最靠近主语的并不一定就是主语，要找到真正的主语才能选择出正确答案。