Вставьте прошедшее или настоящее время
London ________ (1. to have) an underground system since the 19th century. The London Underground _________ (2. to start) in 1863, when workers and engineers ______ (3. to build) the Metropolitan railway. This railway line _______ (4. to go) from Paddington Station to Farringdon Street Station, and steam engines ______ (5. to pull) the carriages. Eleven more lines ______ (6. to open) since then. The world’s first underground electric railway _______ (7. to open) in 1890. This line _______ (8. to go) from the City of London to Stockwell. The most modern line is the Jubilee line (1979). Since the London Underground _______ (9. to begin), many other cities, like New York and Paris, ________ (10. to build) their own system.