() it is raining or not ,I don't know.
I don't know whether it is true 【or not】.加不加 or not 有什么区别?
i don't know whether it will rain or not .but if it __.i sha
He is very busy.I don't know if he will come or not tomorrow
I don’t know ___________ he is well or not.whether/if,为什么?
I don't know ()we will go or not.
I don't know where is it
i ( )know what it is.A,not B,can‘t C,don’t
There is something not that i don't know but didn't say it
I don't care if you think it is true or not,this little boy
I don't know what is it 和 I don't know what it is
Not to say it is discribed with English,I don't know what's
It is raining outside .we don't know where ___(fly)