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

[  ]
A.

has completed

B.

have completed

C.

have been completed

D.

has been completed

答案:D
解析:

本题考查主谓一致和句子时态语态。从by now这个时间状语来看,应用现在完成时;从句意来看“建设工程”应该是被完成;句子主语是the construction,谓语动词应使用单数形式。


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