I thought that -is is the ending for third person plural, meaning 'they smile'?
Simplified, as i understand, yes, for consonant-final verbs but "līrigon" is a vowel-final verb which end in -s for 3rd sing. and -si for 3rd pl.
Correct answer is 'She' is smiling, though it also accepts 'It' is smiling.
This probably just means smiling.
What's he/she doing??
So how do you pronounce it
If you are having trouble pronouncing things I've found YouTube videos that help out
I don't understand how this translates to she/he/it is smiling. How would you change this to translate to just 'smiling'?
You need a subject who is doing the smiling.
If you want the infinitive "to smile", then it is līrigon :)