A)teclado. B)El correo. C)las credenciales del sitio web. D)cosas.E)una conversacion. F) adjuntos. G)Fotografias
You use preterite to describe an action that took place and was fully done, Ex. José entro a la habitación, you can see John went into the room, he completed the action. On the other hand, imperfect tense doesn't specificate if the action was completed, Ex. José entraba a la habitación, it doesn't tell us if José fully entered the room.
La respuesta es: (The answer is:)
3 ¡Es barato! (It's cheap!)
Espero que esto ayuda:) (Hope this helps:) )