Употребите следующие предложения в страдательном залоге ,изменив конструкцию 1.they say that tea has been brought from india.2.some people consider that hamlet is the summit of shakespeare's art.3.they say that nick lived on potatoes and vinegar.4.people know that he is armed.5.they believe that he was killed at the front.6.we expect that the expedition will reach the south pole in may .7.we consider that she was the best singer in america.