She _________the sign language before she served as a volunteer to help the deaf. A. learns B. has l...
2022-11-06 05:54:44 88次 2014-2015学年北京丰台高三上学期末考英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
She _________the sign language before she served as a volunteer to help the deaf.
A. learns B. has learned
C. was learning D. had learned
本题链接：
