Question

The Dongying-Hainan airline         for about 5 months. I have taken the flights three times.

A．is open

B．has opened

C．has been open

D．has been opened

Answer 1

C

句意：东营——海南航线已经开通了五个月了。我已经乘坐过这个航班三次了。结合语境可知本句描述的是现在已经完成的动作，用现在完成时态。主语是动作对象，故用被动语态。选Ｃ。