－I'm sorry to keep you waiting. －Oh, not
题型：选择题
问题：
－I'm sorry to keep you waiting.
－Oh, not at all. I ____here for only a few minutes. [ ]
A. was
B. is
C. have been
D. had been
－I'm sorry to keep you waiting.
－Oh, not at all. I ____here for only a few minutes. [ ]
A. was
B. is
C. have been
D. had been