题干

—What's your uncle?
—He ________ a policeman, but now he is a businessman.
A.was used to beingB.was used to be
C.used to beD.used to being
上一题 下一题 0.65难度 单选题 更新时间:2019-04-07 10:32:30

答案(点此获取答案解析)