Please use your indoors voice in the library.

Please use your outdoors voice when playing outside.

Her tones of voice were full of anger and frustration.

The singing voices of the choir filled the concert hall.

Please keep your voices off during the movie.

The outdoors voices echoed through the mountains.

They used their outdoor voices at the park.

The outside voices were getting louder and louder.

Please use your indoors voices.

Please remember to use your inside voices in the library.