______, the concert began.
A：The listeners having taken their seats
B：Having taken their seats
C：Having taken their places
D：Taking their seats
—Would you like to eat _______?
—No, thanks.
“十三五”规划指出，推进长江经济带发展，要把修复长江生态环境放在首要位置。阅读材料，回答问题。
【长江之忧】近年来，长江流域重化工企业偷排、漏排现象严重，导致突发性水污染事故频发。
【人大呼吁】全国人大代表张兆安呼吁制定《长江法》，明确相关部门的职责与任务，对流域采取综合管理。
【宁波之声】宁波北区污水处理厂引入国际最新技术，日处理污水能力高达10万吨，确保宁波用水稳定。
缩句
①残暴的敌人秘密地杀害了我们党的优秀领导人李大钊。②我常常怀念故乡的许多熟悉的朋友。
— I don't know. Let's look at the ________.
