Answer:
Can you tell us what the question is then we can help you.
Explanation:
The complete prepositional phrase in the sentence stated above is "in the door's key hole". As the name suggests, this type of phrase is introduced by prepositions which in this case is with the use of preposition "in". It answers the question "where" which refers to the location of the object it modifies.
Selling stuff like copper exchanging things
Mrs. Medlock is the nastiest servant at Misselthwaite Manor