The construction of the two new railway lines by now.A．have been completedB．ha
题型：不详难度：来源：
The construction of the two new railway lines by now.| A．have been completed | B．has been completed | C．has coompleted | D．have completed |
|
答案
| b |
解析
| B。考查动词时态和语态。由时间状语by now直到目前为止可知应该用现在完成时，铁路线与建完之间是被动关系所以要用被动语态的现在完成时，句子的主语是抽象名词短语，用单数谓语因此B是正确答案 |
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