Определите функцию( основной, вспомогательный, модальных) глаголов TO BE и TO HAVE. 1. The total length of the new bridge

1. The total length of the new bridge is more than 500 m. (Основной.). 2.With the development of railways the weight and speed of trains have increased. (Вспомогательный.). 3. A large group of designers were invited to the conference. (Вспомогательный.). 4. Some old bridges over the Neva have to be reconstructed. (\"Have\" - модальный, \"be\" - вспомогательный.). 5. The workers are removing all sleepers (шпалы) from the track. (Вспомогательный.).