问题补充:
When Mary came, I on the piano.
A. is playing
B. plays
C. was playing
D. played
答案:
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。
时间:2019-11-22 18:03:14
When Mary came, I on the piano.
A. is playing
B. plays
C. was playing
D. played
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。