Write 'the' where necessary for the given sentences.

Here are the sentences with 'the' correctly added: 1. the UK 2. the White Tower 3. the Isle of White 4. Northern Ireland 5. the Royal Mews 6. the British Isles 7. Trafalgar Square 8. Great Britain 9. St Paul's Cathedral 10. the United Kingdom of Great Britain and Northern Ireland 11. the City 12. Queen Victoria Memorial 13. Hyde Park 14. Whitehall 15. Speaker's Corner 16. Westminster Palace 17. the Thames 18. Ireland 19. Downing Street