高等继续教育 / 大学英语语法
正确率：100%
题型描述: 单选题
Are you certain ＿＿＿＿＿＿?
A.where did they having a meeting
B.where they are having a meeting
C.where are they having a meeting
D.where have they held a meeting
Are you certain ＿＿＿＿＿＿?
A.where did they having a meeting
B.where they are having a meeting
C.where are they having a meeting
D.where have they held a meeting
参考答案：
佳题速递：