Ответ:
Вставляем подходящие слова и формы слов по смыслу и грамматике:
Christmas is the main occasion in modern Britain on which a lot of traditions are followed by a lot of people. For many people it is the main holiday of the year. In Britain it is celebrated on 25 December.
Today it is connected with “making money by shops” that is now part of tradition: most people follow the tradition of buying gifts for their family members. People also buy a Christmas tree. This tradition came from Germany. It was introduced in the nineteenth century. Every Christmas, London gets a gift from people of Norway — a Christmas tree that is 23 metres high. It stands in the centre of London, in Trafalgar Square, and it is decorated with 500 white lights.
Christmas is a time that unites families. Celebrating Christmas includes a Christmas dinner and listening to the Queen’s speech when the Queen speaks to “her” people on TV and on the radio.
There are many royal traditions in Britain. The Queen’s telegram is not a very old custom but it is for very old people. Every British person gets a telegram from the Queen on their one-hundredth anniversary. In 2016 the Queen had her 90th birthday. The day was marked by fireworks and parades. The Changing of the Guard is a very beautiful tradition. Every morning tourists go to watch the ceremony at Buckingham Palace. At 11.30 the guard that stands in front of the palace changes.
Примечание: слово, обозначающее юбилейный день рождения, обычно — birthday; в данном контексте естественно сказать “on their one-hundredth birthday”.
