I am not sure what lay behind their remarks,but it was not good will.求翻译

I am not sure what your talking I am not sure what else to I am not sure what else to say. i am not sure what have to do today. I am not sure what to except同义句 I am not sure what I can buy for my sister.同意句I am not sure( )( )( )for my sister. I am not sure是什么意思 Er...i am not sure. 英译汉i understand what you said but i am not sure i know what you mean I was not sure/certain what I ought to do.为什么这样was not可以是I am not sure /certain what I ought to do. I'm sure I am not wrong what the meaning ofI'm not sure I am up for this i am not sure反义疑问句 翻译成中文：I am not sure i am not sure 什么意思 I am not sure同义句 maybe.but I am not sure. Sure.I am not a bad I AM NOT SURE YET?什么意思?