I have no idea____he will come back from work.为什么不填that?

I have no idea____he will come back from work.为什么不填that? I have no idea____he will come back from work.空处填什么?A.where B.that C.when D.which i have no I have no idea i have no questions. I have no i have no problem! I have no question! I have no I have no language I have no brother and no sister I have no future 可以说 i have no apple吗? i don't have no I have no money now! I have no time 是什么意思? i have no time to I have no words to i have no more to