问题补充:
While Helen the guitar, her mother came in.
A. was playing
B. is playing
C. played
D. plays
答案:
(答案→)A. was playing
B. is playing
C. played
D. plays
解析:while引导时间状语从句,常用进行时态。
时间:2023-12-12 14:07:08
While Helen the guitar, her mother came in.
A. was playing
B. is playing
C. played
D. plays
(答案→)A. was playing
B. is playing
C. played
D. plays
解析:while引导时间状语从句,常用进行时态。