Très intéressant.
yes, "en quelle langue" is the French translation of "in what language"
intéressant(e)
In French, "with" is typically translated as "avec."
To say "very close" in French, you would say "très proche."
(une) langue secrète
Sehr interesant
c'est trés bon
Interesting language = safá me'anyénet (שפה מעניינת)
"interesting maths" are "des math intéressants" in French.
intéressant
intéressant(e)
pas interessant
i love you translation to french is je t'aime here is a source for how to say i love you in different languages. http://www.equicktips.com/how-to-say-i-love-you-in-most-popular-language/
Français
Comment dit-on ...?
c'est
To say the word beard in the French language you say barbe. This word is said as barba in the Italian language and in Latin it is mentum.