Поставьте глаголы в скобках в нужную видо-временную форму активного и пассивного залога: 1. the company (to manage) to sell its first diesel truck in 1930. 2. the market for diesel-powered truck (to open) in the early 1930s. 3. now this methodological research (to sponsor) by siemens.
2.opened
3.sponsors
was opened
is sponsored