Across
- 3. Helps the teachers and students in a school.
- 5. trash, such as paper, cans, and bottles, th
- 7. of two or more people) do something alternately or in succession.
- 9. is left lying in an open or public place.
- 10. Helps the students cross the street.
Down
- 1. people find books and information.
- 2. .
- 3. behaving in a way that is socially correct
- 4. keeps people safe when they swim.
- 6. one of a set of red, yellow, and green lights that control the movement of vehicles
- 8. make someone or something clean.