NUMERO UNO
"Porque tenemos que llegar al aeropuerto a las seis". Why is it llegar and not llegamos in this sentence?
"Dónde está la puerta de salida". Why salida in this one?
http://www.spanishdict.com/conjugate/salir
"salida" is nowhere to be found here. Same with llegar when I search that one. What am I missing?
NUMERO DOS:
From what I can understand, Vosotros is not used throughout South America. Instead 'ustedes' is used. Does it use the bendings of the spanish 'vosotros'?
Are there any way to make the course exclude 'Vosotros'?
In advance, thanks for your help!