When Mary came, I on the piano.A. is playingB. playsC. was playingD. played

发布时间：2020-08-17 06:24:21

When Mary came, I      on the piano.
A. is playing
B. plays
C. was playing
D. played

网友回答

A. is playing
B. plays
(答案→)C. was playing
D. played
解析：考查时态：句意：当玛丽来的时候，我正在弹钢琴。从句意看，弹钢琴是过去某个时间正在发生，用过去进行时，选C。
以上问题属网友观点，不代表本站立场，仅供参考！