Ayer Nora y yo comimos la cena en la cabaña.
Comimos is the plural form of comer and means to eat, Nora and I ate...
Claudio y yo llegábamos al hostal cuando el portero cerró la puerta.
Cerró is singular and in third person (he did), it means to close and is also in past. He closed the door.
Tú reservaste la habitación individual el mes pasado.
Reservaste is to book something, it’s in second person and in past. You booked the room...
Yo llegué en mi auto al hostal a las cinco de la tarde.
Llegué, first person and in past. It means to arrive somewhere. I arrived in my car...
The answer might be 3) repite
You coukd go on your phone or read a magazine or a book. ask the waiter how his/her day was and stuff like that
I don’t speak Spanish sorry
An orbit is the simple planar representation of an electron. An orbital refers to the dimensional motion of an electron around the nucleus in a three-dimensional motion