See sample answer below.

1a.
in this part (preposition-in, object-part)
of the house (preposition-of, object-house)
beyond the oak door (preposition-beyond, object-door)
1b.
Onto the carpet (preposition-onto, object-carpet)
Along the floor (preposition-along, object-floor)
1c.
Toward the door (preposition-toward, object-door)
Into place (preposition-into, object-place)
2.
At one another (clarifies where they are looking)
With me (clarifies they are running together)
To the wrought-iron door (clarifies where they are running to)
Behind us (clarifies where noises are coming from)
In the vestibule (clarifies where they stop)

See sample answer below.

We heard a noise outside the door that was impossible to describe. When the noise grew louder, we decided to run into the yard. We didn’t have time to grab anything. At the strike of midnight, we found ourselves outside. We looked, but could see nothing by the front door.