The book has already been sold.
The dinner has already been cooked.
The book hasn't been sold yet.
The dinner hasn't been cooked yet.
Has the book been sold yet?
Has the dinner been cooked yet?
The book had already been sold when I came to the shop.
The dinner had already been cooked when I came home.
The book hadn't been sold yet when I came to the shop.
The dinner hadn't been cooked yet when I came home.
Had the book been sold yet when I came to the shop?
Had the dinner been cooked ye twhen I came home?