—When did you know the fact? —I didn't know about it ________ ray aunt told me. [ ]A. after B.
[ ]
题目简介
—When did you know the fact? —I didn't know about it ________ ray aunt told me. [ ]A. after B.
题目详情
—I didn't know about it ________ ray aunt told me.
[ ]
B. until
C. unless
答案