какая видо-временная форма и залог у этих предложений ? Помогите пожалуйста
1)Russian, Germans and Poles have come to Britain during political changes in Europe.
2)About nine million people live in London and its suburds.
3)People have been coming to Britain for centuries: some to get a better trip, some to escape natural disa sters.
4)During the 19/th century Britain traded all over the world.

1. present perfect (have come) активный залог 2. present simple активный залог3. perfect continious (have been coming) активный залог4. past simple (traded )  активный залок