-I came to your office yesterday morning, but nobody was in. -Oh, we__________ a meeting in the meeting room.
A: have had
B: had
C: were having
D: had had
                    A: have had
B: had
C: were having
D: had had
举一反三
- They ________ a meeting from 2 to 4 yesterday afternoon. A: were having B: had C: would have D: have
 - If the meeting had not been canceled yesterday, we ______ the plan. A: discussed B: have discussed C: would have discussed D: had discussed
 - You see, we _______ for parents all morning yesterday, but nobody came. A: were waiting B: had waited C: waited D: had been waiting
 - If I had attended the meeting yesterday, I _______ you.
 - They ____ a meeting when the earthquake happened. A: had B: were having
 
