题目内容
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
【答案】
C
【解析】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。
考点:时态及语态
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