1.Amy is buying souvenirs -she is going to visit their friends in London.
2.William is studying the map of London- he is going to have a walk in the center of London on their first day there.
3.Melanie and Amy are buying Caribbean folk costumes- they are going to take park in the Notting Hill carnival.
4.William is learning British learning rules- he is going to drive the car on the way from London to Edinburgh.