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:2021-06-01 12:10:56
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。