Declarar! It’s like say that you are passing through the airport with smth and you have to do it there, so, tienes que declarar en la aduana
Nositros no / llegar al centro comercial
-Nocotros no sabemos llegar a la residencia estudiantil
yo / el profesor de literatura
-Yo conozco al profesor de literatura
Elena y Maria Victoria / patinar en linea
-Elena y Maria Victoria saben patinar en linea
(Hope this helps although I don't know if they are correct)
Good luck.
<span>estudiaban it is two boys (ellos)</span>
