成为一名真正合格的美甲师需要一段时间的（）的积累。
A.学习
B.实践
C.经验
D.比赛
参考答案：A, B, C
------You speak very good French!
--------Thanks .I _____ French in Sichuan University for four years.
A． studied
B． study
C． was studying
D．had studied
