there is a ___book,not my ownA borrow B borrowed C borrowing D to borrowwhy^^

there is a ___book,not my own
A borrow B borrowed C borrowing D to borrow
why^^

B
是原来修饰book的
这本书是我借的 而书是被借的撒
就是这样

B borrowed 用被动语态， 被借来的！