. fill in the articles with the geographical names where necessary: 1. …pacific ocean is one of the largest one in the world. 2…. baikal one of the cleanest lakes is known for its unique nature. 3. the group of our students travelled to …usa on cross culture tour . 4. there are beautiful landscapes in …russia. 5….uk is separated from… europe by …. straits of dover. 6…new york is famous for its multinational population.

Here are the correct articles for the provided geographical names:

1. The Pacific Ocean is one of the largest one in the world.
   • Rule: Names of oceans always take the definite article the.
2. Lake Baikal (or simply Baikal), one of the cleanest lakes, is known for its unique nature.
   • Rule: Individual lakes typically do not take an article, especially if the word "Lake" precedes the name. If used alone in a general sense, it remains without an article.
3. The group of our students travelled to the USA on a cross-culture tour.
   • Rule: Country names that are collections of states or contain words like "Union," "Republic," or "Kingdom" (USA, UK, UAE) require the.
4. There are beautiful landscapes in - Russia.
   • Rule: Most individual countries (singular names) do not use an article.
5. The UK is separated from - Europe by the Straits of Dover.
   • Rule: The is used for "the UK" (Kingdom). Continents (Europe) take no article. Names of straits or canals usually require the.
6. - New York is famous for its multinational population.
   • Rule: Names of cities do not take an article.

Would you like to review more examples regarding the use of articles with mountain ranges or groups of islands?