La puerta se ________ fácilmente. (The door opens easily.) (HINT: Conjugate "abrir" in the present tense.)
I hadn't seen any grammar rules for an object such as a door, so I used the él/ella form, hoping it might apply here. However, it seems that it was actually a part of the yo form.
I'm just curious why it isn't included in the list. Is there an equivalent for "it" in Spanish? Or is "it" considered as "I," like in the case of "yo"?