题目内容
The construction of the two new railway lines __by now.
[ ]
A.has completed
B.have completed
C.have been completed
D.has been completed
D
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目
题目内容
A.has completed
B.have completed
C.have been completed
D.has been completed