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：

本题考查完成时的语态。句意为：“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、D两项。construction 是不可数名词，谓语动词用单数，by now和完成时态连用。