问题补充:
I didn’t manage to do it you had explained how.
A. until
B. unless
C. when
D. before
答案:
(答案→)A. until
B. unless
C. when
D. before
解析: not…until…结构。
时间:2019-03-12 13:00:29
I didn’t manage to do it you had explained how.
A. until
B. unless
C. when
D. before
(答案→)A. until
B. unless
C. when
D. before
解析: not…until…结构。