III. Complete the sentences with the correct prepositions.
1) The United Kingdom is separated from the European continent by the English Channel.
2) The United Kingdom is made of four lands: England, Scotland, Wales and Northern Ireland.
3) We can get to England by train or on a ferry.
4) Many visitors to Britain prefer travelling by plane landing at Heathrow or Gatwick airports.
5) Gatwick airport is situated 43 kilometres south of London.
6) I'm looking forward to visiting London.
7) Nothern Ireland has a border in the south and the west with the Irish Republic.