These bottles are empty. These boxes are fragile. These boxes are made of plastic. These boxes are made out of plastic. These boxes are the same size. These boys are not good at speaking to girls. These bridges swayed in the wind. These buildings have become a well-known, popular spot as a World Heritage site. These buildings need temporary repairs. These bus ladies seem to like to do so. These butterflies are rare in our country. These buttons are kind of difficult.