相关Perhapsonceyougotfre的文学知识

问题详情：  Perhapsonceyougotfreeplasticbagswhenyoushoppedatthesupermarket.Butnowthingshavechangedalready.  SinceJune1,2008,Chinahasbanned(禁止)itsshopsandsupermarketsprovidingfreeplasticbags.Shoppe...