问题
选择题
As we all know, it's not polite to keep others _____ for a long time. [ ]
A. wait
B. waited
C. to wait
D. waiting
答案
答案：D
搜题请搜索小程序“爱下问搜题”
As we all know, it's not polite to keep others _____ for a long time. [ ]
A. wait
B. waited
C. to wait
D. waiting
答案：D
