–Iwasstudyingforamathtestat9o’clockyesterdayevening.Wh...

問題詳情：

 –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

知識點：動詞時態

題型：選擇題