— You were out when I dropped in at your
问题:
— You were out when I dropped in at your office.
— Oh, I _____ a meeting. [ ]
A. was having
B. have had
C. am having
D. had had
— You were out when I dropped in at your office.
— Oh, I _____ a meeting. [ ]
A. was having
B. have had
C. am having
D. had had