I know her brother very well.怎么改为否定句

I know her brother very well改为一般疑问句（ ）you（ ）her brother very well? I know her brother very well.怎么改为否定句 I know her brother very well（very well）提问 you I know her brother very well（very well）提问you her brother i dont know her 帮我想一下下面的英语作业改为一般疑问句:I am Grace's brother I know the question to the answerHe know cindy 改为否定句:We are doctous I know her She know hin I don't know her I did know her. I knew her. 什么区别? Do you know what I call her I know how she [miss]her mother. I r_____ know what her job i know her name .(改为否定句) I know her name 改为否定句 not,I,know,her,do,sorry(.) I don't(know)the teacher,but I(know about)her.可以换成know about;know? I don't(know)the teacher,but I(know about)her.可以换成know about ; know? i don't know the name () your brother. I know his brother’saddress怎么改为否定句 Brother,do you really think I do not know ah?