高等继续教育 / 大学英语I
正确率：100%
题型描述: 单选题
He didn’t turn up until we _ _ _ _ _ _ _ _ _ _ _ the work.
A. had done
B. did
C. were doing
D. have done
He didn’t turn up until we _ _ _ _ _ _ _ _ _ _ _ the work.
A. had done
B. did
C. were doing
D. have done
参考答案：
佳题速递：