"Ellos están leyendo."
Translation:They are reading.
Ser vs Estar for the present progressive/Gerund. does it depend on the verb or is it always estar?
It's always estar + gerund for the progressive tense. Duolingo should really mention this; luckily I learned it in school. Here's some info on it from SpanishDict though: http://www.spanishdict.com/answers/100047/progressive#.VuhR2MfMykg
I did get ellos on the slow button when I re did this one. I think it just might be my speaker on the phone app.
How do you properly pronounce 'leyendo'? Because I listened to it several times and it always sounded like 'lay-chen-doe'. But Google Translate pronounces it like I would expect, as 'lay-yen-doe'.