Ответ:
- The Urals are lower than the Caucasus.
- - Great Britain is situated on - two large islands. - Christmas and - Easter are my favourite holidays.
- It takes about an hour to get from - Domodedovo airport to - Lenin street.
- What's the weather like today in - Australia?
- The Colorado river flows through the Grand Canyon.
- The Galaxy where we live is called the Milky Way.
- I have a cat. The cat is black.
Отличная работа! Теперь ты знаешь, как правильно использовать артикли в английском языке. Продолжай в том же духе, и у тебя все получится!