This is a clever script, however, it is a little bit too long, the script could be shortened alot more, but it is a good script.
You'll need to update the Greetings; you have put the word "Hello" for every one of the languages, however, in some of the language subjects, you have put the non-plural words instead of plural.
Here is an example; "Russian (You put "Privet"); Privet means "hi", to say Hello, it's ("Здравствуйте (Pronounced = Zdra-stvooy-tye"))
Well done on the script;
Kind regards,
Archie