Употребить артикли, где это необходимо: when the queen was born on the 21st of april 1926, her grandfather, king george v, was on … throne and her uncle was his heir. british people are proud of ceremonies in … national capital – london. the queen's only sister, princess margaret, countess of snowdon, is well-known for her …charity work.

When the Queen was born on the 21st of April 1926, her grandfather, King George V, was on the throne and her uncle was his heir.
British people are proud of ceremonies in the national capital – London.
The Queen's only sister, Princess Margaret, the Countess of Snowdon, is well-known for her charity work.

Dear Robert,
Elena and I would like to invite you to visit us in Ekaterinburg. After all, you want visit the Siberia or the Urals? We have a rest in July, will you be able to come at this time?In the summer we have very good! We have thought of everything. We will acquaint you with Ekaterinburg, which is the capital of the Urals. We will visit the Museum of Stone Carving Art, will show you the biggest temples and monasteries, will hold you through the nature park "Deer Streams".We also invite you to our cottage, which is located on the shores of picturesque Lake "Baltim". We will be a barbecue, swim and sunbathe. And introduce you to our friends. There will be a lot of fun!If you agree, then write sooner. We'll tell you how it should be done. All your expenses in Russia we vozmem over. All your expenses in Russia we take on. And you will live in our apartment, we have already prepared for you a private room.
Looking forward to your reply.

Dear Thomson,
I invite you to visit my native village Kundravy. In our village there is a museum dedicated to the film director S. A. Gerasimov, who was born in our village. There is also a monument and a church in our village. My favourite place is lake Kundravy. The weather in our area is very diverse. In summer, we swim in the lake, walk to the neighboring villages, play various games, and in winter you can enjoy tea and a warm blanket. And you can play  snowballs, go skiing and skating in the fresh air. We have fun!
With best wishes,
Jora