问题补充:
While he his homework , his mother came in.
A. does
B. did
C. was doing
D. do
答案:
A. does
B. did
(答案→)C. was doing
D. do
解析:while 引导的时间状语从句,从句往往用进行时态,故选C
时间:2022-06-21 20:49:38
While he his homework , his mother came in.
A. does
B. did
C. was doing
D. do
A. does
B. did
(答案→)C. was doing
D. do
解析:while 引导的时间状语从句,从句往往用进行时态,故选C