Billandhisfamilyhasbeenlivinginthesix－familybuildingfor...
問題詳情：Billandhisfamilyhasbeenlivinginthesix－familybuildingforyears.Alltheneighboursgotalongfairlywellwitheachotheruntilrecently.Anoldmanandhiswifeusedtoliveonthesecondfloor.Bill’smotherandtheoldlady...