Это личные местоимением являются it, that,one и какую роль выполняют? 1. It is the Burj Dubai. Today it is the tallest skyscraper in the world.
2. It was at the end of the 19th centure when the first skyscraper in the world.
3. Steel and concrete beams and columns that carry the weight of the superstructure are placed into the foundation.
4. That people can get to all parts of a city with the help of public transport is a great achievement of city authorities.
5. He was the one to build a first skyscraper.
6. Skyscrapers are the world's tallest buildings. They are also the most comfortable ones.
Они являются местоимениями и выполняют роль в местоимений и также употребляются в разговорной речи.
Объяснение: