It depends. Was there some food? If so, it's correct to say, "there was some food".
No, the phrase 'busy with food' is not a sentence, it's a sentence fragment. It has no subject and it is not a complete thought.
yes
you could say "can i get some food" but it would be better to say "may I get some food" anybody to "get" some food, if you're asking permission, it's better to say may I
Yes it is correct to say the following sentence
Many words that began as hyphenated terms have become correct as single, unhyphenated words. It is correct to refer to "take-out food", but it is also correct to say "takeout food".
It is correct to say that Pelvetia seaweed is a traditional food in Europe.
Some is plural so "are" is correct. The answer is Barukhashem
This sentence is grammatically correct.
That is the correct spelling of the Mexican food item, enchilada.
Spanish food would refer to food from Spain, Latin, Latin American or country specific ( Cuban Food, Colombian Food, Peruvian Food etc.. ) are more politically correct terms that can be used.
no.
yes it is
Well, you could say "use up" as well, but "burn" is a reasonable comparison.
Yes, you can say that. Some people think you can and some people think you can't.