清洁房间时，发现挂着“DND”牌，不得敲门，要打电话征询客人。
错误
暂无解析
Thegoodsarepackedincartonsinterlinedwith________material.
Adultssometimesenvychildrenwhoplayallthetime____theythemselveshavetowork.rainorshine.
温室气体的增多加剧了温室效应。
Annualleave
Ioftenthoughtofmychildhood,____Ilivedonafarm.
