ЕГЭ: Грамматика и лексика (тест 10)

In New Guinea and the surroundings islands, 750 languages have been identified. This represents by far the greatest single ... of languages in the world.

More than half the languages have some ... to each other, often very close ones.

Others, mainly in the ... areas, are spoken by just a few hundred people.

Almost ... there are tribes that remain undiscovered in the remote parts of this land, and scientists believe that these people too may speak other languages.

So the total of 750 languages is ... to stay the same if further exploration of the country takes place.