–Iwasstudyingforamathtestat9o’clockyesterdayevening.Wh...

问题详情：

 –I was studying for a math test at 9 o’clock yesterday evening. What about you?

  --I       the room.

  A. will clean   B. am cleaning   C. was cleaning

【回答】

C

知识点：动词时态

题型：选择题