You don’t know about the difficulty I had ______the work then at all.A. done B. to do C. for doing D. in doing 请问高人这题该选什么?为什么?谢谢!为什么呀?能说说理由吗?

you don't know anything about me You don't know about real i don't know how()(tell) you about this I don't know what you are thinking about I don't understand you.I don't know what you are thinking about! “if you don't want others to know about it ,don't do it. “i don't know you know i don't know I always concerned about you with the way you know and the way you don't You don't even know I still care about you .You don't even know about a thing I feel.这个, what you don't know ,you don't know Don't You Know 歌词 you don't even know you don't know 中文 You don't know me You don't know nothing don't tell you know . i don‘t know what you're talking about和i don‘t know what are you talking about有 什么区别 They Don't Know About Us 歌词