Burj Khalifa is (a)   building in the world. (tall)

This woman has (a)   waist in the world. (small)

The (a)   base jumper is 84 years old. (old)

This hotdog is the (a)   in the world. (expensive)

Her fingernails are (a)   in the world. (ugly)

Harbor's ears are (a)   dog ears in the world. (long)

The (a)   gathering of people dressed as penguins is 624. (large)

I think his last book is the (a)   . (interesting)

I have (a)   mom in the world. (beautiful)