You will find the game is not so difficult to play ______ you understand its rules. A. until B. sinc...
2022-12-02 01:27:30 34次 2015届四川成都南片区六校联考高二上学期期中考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
You will find the game is not so difficult to play
______ you understand its rules.
A. until B.
since C.
before D.
once
本题链接：
