题目内容
Only in this way, directed by the teacher, ______work out the problem the day before.
A.had they |
B.they could |
C.could they |
D.did they |
D
【解析】略
|
题目内容
Only in this way, directed by the teacher, ______work out the problem the day before.
A.had they |
B.they could |
C.could they |
D.did they |
D
【解析】略
|