(Last night, my friends and I had a party at my house. It was very fun, but this morning the living room is a mess. There are many things on the floor and I don't know who they belong to. I need to investigate.)
In this article, we will break down exactly what the exercise expects from you, provide the grammatical rules behind the structure, offer a step-by-step walkthrough of typical exercises found on page 219, and give you advanced practice drills to ensure you master it before your next quiz.
Anoche, mis amigos y yo tuvimos una fiesta en mi casa. Fue muy divertida, pero esta mañana la sala es un desastre. Hay muchas cosas en el suelo y no sé a quién pertenecen. Necesito investigar.
If you are stuck on the digital "Practice It UPD" for P219:
In Spanish, you almost always need el, la, los, las before the object when asking about possession.