来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/08/29 04:41:56
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
解题思路: 考查现在完成时的用法。be open表状态才能与表示一段时间的状语连用
解题过程:
答案是 C
最终答案:be open表状态才能与表示一段时间的状语连用