i cann't answer,because i really don't know.
i cann't answer,because i really don't know.
i cann\'t answer,because i really don\'t know.
There are four answer here.I really don't know ( ) .
i really don't know
sorry,I really don't know----------
I really don't know where to
I DON'T REALLY KNOW 还是 I really don't know
I really don"t know.I don"t really know.哪句话对?THANKS
I really don't know when I will start my trip=I really don't
i cann't you
I cann\'t wait.
I'm sorry,but I don't know the answer.