问题
选择题
I'm so sorry to keep you for a long time. [ ]
A. waiting
B. to wait
C. wait
D. waited
答案
答案：A
搜题请搜索小程序“爱下问搜题”
I'm so sorry to keep you for a long time. [ ]
A. waiting
B. to wait
C. wait
D. waited
答案：A