Перепишите предложения, подчеркните сказуемое главного предложения и определите видо-временную форму и залог глагола. (Напри¬мер, was going - Past Continuous Active от глагола to go).
1)Some attempts to find the metal in the free state were made ten years ago.
2)It is thought that this island was a tropical zone millions of years ago.
3)A lot has been discovered about journeys to the South Pole.
4)Language helps us to make the best of our life