Помогите правильно вставить время глагола. Past simple или Present Perfect.....
The London Undeground (start) in 1863? when Victorian engineers and workers (build) the Metropoliten railway. This railway line (go) from Paddington Station to Farringdon Street Station, and steam engines (pull) the coaches. Eleven more lines (open) since them. The world's first undeground electric halway (open) in 1890. This line (go) from the City of London to Stockwell in South London. The most modern line is the Jubilee line, which (open) in 1979. Since the London Underground (begin), many other cities, such as New York and Moscow, ( build) their own systems