Is manner on the decline among teenagers?

问题描述:

Is manner on the decline among teenagers?
如果我答是,请给我一些理据/examples去支持,用英文作答.

呃,这个……你可以说很多方面啊,不过我不知道hk具体的情况,就说说我的想法吧,你斟酌一下1.teenagers nowadays are becoming too pround to say thanks to those who offer help which is universally considered goo...