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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

 The construction of the two new railway lines _______by now.

A. has been completed              B. have been completed

C. has completed                   D. have completed

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

A. has been completed  B. have completed  C. has completed D. have been completed

The construction of the two new railway lines          by now.

       A．has completed                                B．have completed

       C．have been completed                       D．has been completed

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

A.have been completed? B.has been completed? C.has coompleted?????? D.have completed

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

25．The construction of the two new railway lines____by now.