NEW HORIZONS » Стр.175 (8)

Transform the passive sentences into the active. Around 1780, Johann Schmidt of Salzburg, Austria created the upright piano and later improved in 1802 by Thomas Loud of London whose upright piano had strings that ran diagonally. Someone made the first pencils in the same area. The name of the doll was after Ruth’s daughter Barbara. At the American Toy Fair in New York City introduced Barbie. The doll was intended to be a teenage fashion doll. The Ken doll was named after Ruth’s son. The inventor Leonardo da Vinci suggested the idea to use underwater boats, though the thoughts to perform underwater voyages had appeared much earlier. In the 1500s designs for underwater boats and submarines were presented. After World War I began the highest development observed submarine constructing.