I hate travelling by air__________ you usually have to wait for hours before the plane takes off. A....
2023-02-14 21:24:23 149次 2013年初中毕业升学考试（上海卷）英语（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
I hate travelling by air__________ you usually have to
wait for hours before the plane takes off.
A.because B.though
C.until
D.unless
本题链接：
