"They are among us."

[Biochemistry]

Great for every conspiracy theorist hoping to move to Italy.

[Michabelle]

Duolingo has some pretty weird sentences, but this is by far the most ominous one I've seen!

[siebolt]

yes, simply use "fra" or "tra".

[josh2934]

Between and among being the same there makes sense to me.What is the difference between tra and fra though? Does one correspond to each english counterpart?

[Sacredmaiden]

In English, when I think of the words "between" and "among", I think of very different meanings. But, they are combined in Italian?

[pinerich]

when do I use 'fra' and when 'tra'?

[Overlordspam]

The choice seems to be made purely for pleasing phonetics. Check out this article it helped me: http://italian.about.com/od/grammar/a/italian-preposition-tra.htm

[pinerich]

Thanks!!!! It really helped me

[justakoalabear]

The truth is out there...

[TONYPAKER14]

They are among us!