I'm not sure__or not he will come back home

I'm not sure__or not he will come back home 5.I’m not sure___ he will come back home tomorrow or not.A.i he has not come back home I am not sure --he will come back . I'm hiding,not very busy,I will tell you if I come back,miss 陈述句语序一I do not know when he will come back.二I do not know wh i don not think he will come back next week _____ ____ 反义疑问句 I am not sure wether he will come back soon?whether引导的是什么从句? ____ (也许)she will come back tonight,but I'm not sure. I am not sure( )he will come or not could you tell me_____?I'm not sure.A.when did he come home M---- he will come,but I'm not sure.A--- her grandmother is