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

[  ]
A.

has been completed

B.

have been completed

C.

have completed

D.

has completed

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。


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