Complete the frantic text messages between two friends trying to find each other at a concert by dragging the right words into the blanks.

Alex: I am standing at the main entrance, where are you? Sam: I am already in the building! Alex: Well, my seat is on the second floor, so hurry up!

Alex: I am standing at the main entrance, where are you?

We use at to talk about a specific point or meeting place, like an entrance.

Sam: I am already in the building!

We use in when someone or something is inside a 3D space or enclosed area.

Alex: Well, my seat is on the second floor, so hurry up!

We use on when talking about the floors or levels of a building.