Meaning: This means that her voice was repeated as a sound in the space in the building.
Choice of Words: Echoed means to be repeated as a sound or image. Room means a space in a building.
Meaning: Her voice kept bouncing off the walls and other objects in the room.
Choice of Words: **Bounced** means to jump or move quickly in different directions. **Around the room** tells us where the sound is moving.
Meaning: Her voice made the whole room filled with sound.
Choice of Words: **Filled** means to make something full of something else. **With sound** tells us what the room is being filled with.