Перепишите и переведите предложения, обращая внимание на употребление времён группы

Перепишите и переведите предложения, обращая внимание на употребление времён группы Perfect (Present, Past, Future) в страдательном закладе. Выпишите сказуемые и укажите их видо-временные формы. 1) The reason for the freight train derailment has not been found yet. 2) The passengers had been invited to get on the train before it de-parted. 45 3) It has been calculated that East Japan Railway Company sells 1,000 tons of tickets annually. 4) For many years the railway track has been laid and repaired by hard manual labor. 5) The new locomotive will have been tested by the end of the year.