Georgians speak Georgian as their native language.
Most of them obviously speak Georgian. There are also speakers of related languages such as Mingrelian, but while Mingrelian is different enough to be seen as a distinct language, it is sociolinguistically speaking a dialect, because its speakers prefer regular Georgian as written language. There are minority languages such as Tsova-Tush a.k.a. Batsbi, which is related to Chechen, Abkhazian, which is a Circassian language, and Ossetian, which is related to Iranian languages.
Yes, English is the most commonly spoken language in Georgia.
Estonians speak Estonian as their native language.
Serbians speak Serbian as their native language.
Georgians do not speak French, except for a few people who learned it in school.
In terms of native languages, 76.54% of Turks speak Turkish as their native language, 20.2% speak Kurmanji Kurdish as their native language, and 1.38% speak Arabic as a native language.
Navajos still speak their native language. They also speak English.
English is the official language of Nigeria therefore it is their 'native' language.
The native language of Albania is Albanian.
Grapes speak Esperanto as their native language.
You should always speak the common language of the place you work. If your native language is different than the common language, it is counterproductive and rude to speak it at work.
Native Americans speak in language not in symbols.