This sentence is missing a

Ran as fast as they could go out the door, down the street, and back home.

Verb or verb phrase

Subject

Preposition

Exclamation mark

Subject

Explanation:

Because before the first word Ran which is a verb, there should be a subject, right

So, it will be as the following:

They ran as fast as they could go out the door, down the street, and back home.

Tell me if we can choose only one choice or more

Good luck!