Теория:

To speak about St. Paul's Cathedral, study some information. (Изучи некоторую информацию, чтобы говорить о Соборе Святого Павла).
  
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St. Paul's Cathedral is one of the greatest English churches. It is not far from the Tower of London.
The famous English architect Sir Christopher Wren built St. Paul's Cathedral.
It was built in the 17th century after Great Fire. It took Sir Christofer Wren 35 years.
It is a beautiful building with many columns and towers. In one of its towers there is one of the largest bells in the world.
Источники:
https://pixabay.com/en/st-pauls-cathedral-london-uk-768778/