Here are some suggested ways of combining the sentences to make more grammatically complex sentences:

1. Queen Elizabeth II came to the throne in 1952, when her father, King George VI, died of lung disease.

2. In Britain, the crown normally passes from monarch to eldest son, so as King George VI had no son, the crown passed to his eldest daughter, Elizabeth.

3. Queen Elizabeth II is a 'constitutional monarch', which means that she is officially the head of the state, although the country is actually run by the government.

4. In the British monarchy system, the husband of a female monarch does not have any recognized special status, which is why the present Queen’s husband is not called King Philip.

5. Every day, the Queen’s office receives official ‘red boxes’ full of documents and reports from government ministers and officials, which must all be read and signed by the Queen.

6. As Head of State, the Queen maintains close contact with the Prime Minister, with whom she has a weekly audience when she is in London.

7. Although the Queen's public birthday is celebrated in June with the Trooping of the Colours, her real birthday, which she celebrates privately, is on 21 April.

8. When The Queen makes her annual visit to Scotland during August and September, Buckingham Palace, her main London residence and office, is open to visitors from the public.