What does "things are pretty quiet" mean in English for Spanish?

In English for Spanish, "things are pretty quiet" means:

las cosas están bastante tranquilas

Listen to "things are pretty quiet": (If you have an HTML5 enabled browser, you can listen to the native audio below)

This is a phrase that is used in the GamesForLanguage English for Spanish Language Game in the following scenes:

• English for Spanish 4, Level 3, Scene 3