To Eat is a verb, not an adverb. The future tense of "To Eat" (Comer) is:
Comeré - I will eat
Comerás - You (singular informal) will eat
Comerá - You (singular formal) He/she/it will eat
Comeremos - We will eat
Comerán - You (plural)/they will eat
To say "future leaders" in French, you would say "les futurs leaders."
yes, You could say she magically raised her wand
It would be more helpful to have the whole sentence, however; if you were to say, "The hat that covered their hair," it would be recognized, not as an adverb, but as an adverbial phrase.
It depends on how you use it, if you say "countered a punch" then yes, it would be.
fiance' would-be
You would use an adverb. The sentence would read, "he is gentlemanly."
"In the future" is the more commonly used phrase. It refers to a general unspecified time ahead. "In a future" can be used if referring to a specific, hypothetical future instance.
It could be, but it is not an actual word. Neither is oldishly. To say "in an old manner" you would have to say that, unless something is very, very old when you can use the adverb primordially.
I would say a food critic
To say "eat" in Sicilian, you would say "mangia" or "manciari".
I would say Cloudbooks
No You would have to say "will trade"