Which one is right...Thank you.

Which one is right...Thank you. which one is right? which is the right one? which one is you help Which one is right?Why? which one is the right answer choose the one that is right for you 中的that为什么不能换成which Which one?Thank u. Which one is right of the following sentences? which one is your mother?ieft or right.是什么 success comes from failure,failures,which one is right? thank you 回答,写that is right,行不行