It is very impolite to keep others ________ for a long time. A. waiting B. wait C. to wait D. waited...
2022-10-16 02:21:26 70次 2018秋（安徽）人教版九年级英语同步测试：unit 10 2 第二课时 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
It is very impolite to keep others ________ for a long time.
A. waiting B. wait
C. to wait D. waited
本题链接：
