I know her sister（改为疑问句和否定句）

I know her sister（改为疑问句和否定句） i know her name .(改为否定句) I know her name 改为否定句 i think i know her(改为反义疑问句) I know her brother very well.怎么改为否定句 改为同义句：I don’t know what I should buy her.I don't know _____ _____ buy her. I know her brother very well改为一般疑问句（ ）you（ ）her brother very well? My sister is ill.I have to take good care of her at home.改为同义词My sister is ill.I have to ( ) ( ) her ( ). Kate is her sister.改为否定句 i dont know her I don't know what I can buy for her .如何改为同义句 Maybe her sister is in her office.改为同义句 Her sister is similar to her mother改为同意句 Mum lets her look after her sister.改为同义句 I really don't know whether I should call her?(改为简单句)=I really don't know( )( )call her Emma is her sister(改为同义句) Emma ( ) sheEmma is her sister(改为同义句)Emma ( ) she ( ) sister i know my sister well 怎么 翻译 I don't know her