Who can help me find a social morality warning about apartments, restaurants, classrooms, grasslands, squares and public toilets?

Restaurant: We are deskmates. Why should we move chopsticks?

Classroom: Don't go it alone, shall we do it together?

Grassland: A piece of green land, do you have the heart to waste it?

Plaza: you can enjoy yourself, but it's not good-looking?

Public toilet: let it flow to the ground smoothly!