1.Themanhas___lonelysincehiswifeleft.AbeenBgotCbecomeDturned
2.Thrlightisoff.Mrwang_____beintheoffice,
AmustBmustn'tCcanDcan't
3.____apleasantlifewearehavinginthecentury.
AwhatBwhataChowDhowa
请帮我讲解一下.