Question

 I ________ when the UFO landed.

A. am watching TV   B. was watching TV   C. have watched TV  D. watched TV

Answer 1

B

解析:B考查时态，表示在过去某一时刻或者某一段时间正在进行的动作。句意：当不明飞行物登陆时，我正在看电视。故选B。