Teaching a teenager to dress modestly can be difficult, especially if their friends in their immediate social circle are prone to dress inappropriately.
 dress modestly dress appropriately
老師 (讓小朋友出校車後): 別嬉戲，別跟陌生人說話。 (請填空)
Teacher (after letting kids out of the school bus on a field trip): No orseplay. Don't talk to strangers.