Исправьте грамматические ошибки в следующих предложениях (степени сравнения)
1. London has become the 10th expensivest city in the world. 2. Cleveland is now one of the most cleanest cities in North America. 3. The London Underground is worst than the Tokyo Underground system. 4. Ireland is not as larger as Sweden. 5. The Moscow Underground is more cheap and much most comfortable than the one in London. 6. Most tallest office buildings in the world are in New-York. 7. Prague is Central Europe's glamourest city. 8. The weather in England is as changeable than in Russia. 9. London is very older than Washington. 10. Business people say that London is the more exciting of all the major cities in the world. 11. Londoners also say that it is more cleaner than it used to be, and much more safe than many other European cities. 12. The new photocopier is so reliable as the old one.