◎ 题干
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
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“The construction of the two new railway lines _____ by now. [ ]A. has completed B. have completedC. have been completed D. has been completed …”主要考查了你对  【现在完成时的被动语态】【主谓一致】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。