Question

you were not in when i

---You were not in when I went to see you yesterday．
---Oh，I ________ for a friend from England at the airport at that moment．（　　）

A. had waited

B. was waiting

C. am waiting

D. have waited

Answer 1

答案：B．根据语境迹兆盯You were not in when I went to see you yesterday和时间状语at that moment可知那时我正在机场等朋友，句子的时态是过去进行时猜缺，其结构为：was/were+动词的姿和ing形式；又因主语是I，故系动词用was．故选：B