Is this guitar your/yours?

Is this guitar your/yours? The___unit of this book is Can you play the guitar. is this your skirt this is your Maybe this is your Is this your uncle? this is your aunt. is this your business Is this your schoolbag? Is this your (空格) Is this your schoolbag? this is your pencil Is this your cake. This is your explanation? Is this your-----photo This is your destiny Whose guitar is this?（改为同义句）_____ _____ the guitar belong to?有没有人能告诉我为什么 whose guitar is this (同义句） ———— ———— the guitar belong to