I have no idea _when___he will come back.(whether可以吗?如果可以那if呢?)

I have no idea I have no idea!的同义句 I have no idea about it. I have no idea what to I have no idea． 啥意思. i have no idea 啥意思 i have no idea about latest You have no idea what I feel I have no idea what do you I have no idea how to You have no idea how STRESSED I am You have no idea how STRESSED I am 感激不尽：i have no idea .idea 能不能写plan.plan和idea是可数吗 I have no idea.But I will never give up. I have no idea=I ____ ____ What should i do?i have no idea. What should i do?i have no idea. have no idea 造句 i have no idea what i'm saying 还是i have no idea what am i saying 为什么