I am not sure wether he will come back soon?whether引导的是什么从句?

I am not sure wether he will come back soon?whether引导的是什么从句? I am not sure是什么意思 Er...i am not sure. I'm sure I am not wrong i am not sure反义疑问句 I am not sure what your talking 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? I am not sure.that I am gay I am not sure what else to I am not sure what else to say. I am not sure yet同义句I am not sure yet=? may be,I am not sure还是maybe,I am not sure? 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 when I should go.(同义句)I am not sure when ____ ____