Britain has important relations.
общий - Does Britain have important relations?
специальный - Which country has important relations across the world?
альтернативный - Does Britain have important relations across the world or not?
разделительный - Britain has important relations, hasn`t it?
The Commonwealth includes 13 of the world`s economies.
общий - Does the Commonwealth include 13 of the world`s economies?
специальный - What includes 13 of the world`s economies?
альтернативный - Does the Commonwealth includes 13 or 14 of the world`s economies?
разделительный - The Commonwealth includes 13 of the world`s economies, doesn`t it?