Предложения со словом isn't a,aren't any

There isn\'t a book on the table. There aren\'t any books on the table. There isn\'t a vase on the bookshelf. There aren\'t any vases on the bookshelf. There isn\'t a pen on the desk. There aren\'t any pens on the desk. There isn\'t a laptop in the bag. There aren\'t any laptops in the bag.