In this sentence, isn't the term "tilstrækkeligt" being used as an adjective modifying the noun "mad"? Or is it, as the form implies, an adverb?
Yeah, it should have been an adjective and thus not have the -t suffix. It's like you wouldn't say "we do not have sufficiently food" in English.
You guys are right. This sentence will now be butchered and sacrificed to the Norse gods, I hope you are happy with yourselves ;)
Which Norse god created Duolingo sentences? You should sacrifice this sentence to Luis von Ahn.