问题
选择题
---I came to your office yesterday morning, but nobody was in.
--- Sorry, we _______ a meeting .
A．have had
B．are having
C．were having
D．had
答案
答案：C
题目分析：句意：我昨天早晨来你办公室了，但是没有人在。对不起，我们正在开会。表示过去某一时间正在发生的事情，要用过去进行时。故选C。