It basically translates to "Be at your best behavior!" or "Be ready at attention" depending on the scenario.
I don't understand the context of the story, can you provide an explanation?
You walk into the school wondering what you should eat as a snack. You walk past many healthy and unhealthy snacks. But now you have to choose of what kind you want. Students attending schools with vending machines face this problem everyday: healthy or unhealthy. In my opinion, schools should offer healthy vending machines because students would have a healthier snack choice, it would lower obesity rates, and students would be able to realize of what is a better choice of food for their body.
Answer:
The next day is rainy so Aubrey and Bridget play inside all day. Aubrey is still really sad about what happened to her mom, but is also kind of mad that her mom left her. Aubrey tells Bridget about the car crash that killed her dad and little sister, Savannah.
