none of the above
Explanation:
because por is usually used to express cause or something
Answer:
I stop, make sure the car is locked and then go to the front door.
Or I stop, open the door, and say hello to the front secretary.
Explanation:
I'm not exactly sure what you're asking but by the patters of the first sentences, I think the ones I put are right.
Answer:
menos/que/más/que/como mucho/como
Answer:
A vivieron
Explanation:
Because ellos could be used as a pronoun for sus padres, so it would be vivieron.
