— Why weren't you at the meeting?
— I for a long distance call from my sister in America.
A. was waited
B. was waiting
C. has waited
D. have been waiting
网友回答
A. was waited
(答案→)B. was waiting
C. has waited
D. have been waiting
解析：上文的语境是过去时间，下文表示过去时间内正在进行的动作。