I am not sure --he will come back .

I am not sure --he will come back . I am not sure wether he will come back soon?whether引导的是什么从句? I am not sure( )he will come or not I am not sure _____ he will come here o OK .I am sure he will come He will come tomorrow.I am sure 合成一句 I'm sure that he will come back tomorrow中的that he will come改 i am not sure if he-(will)--come 为什么要加will啊?不是主将从现 I'm not sure__or not he will come back home l am not quite sure about it.Maybe he will come,and maybe he I am sure you all will be (r) when you come back from the ho ____ (也许)she will come back tonight,but I'm not sure.