急性乳腺炎的症状:could you please quote your best P&D?

Could you please give me some advices? could you please...和could I please...怎么回答，有区别吗 Could you mail these letter for me,please? --Could you mail these letter for me,please? 27. Could you know ___ second chance please? Could you please go to the party?answer____________ （Could you please do me a favor ?）是什么意识？ could you please quote your best P&D? could you please write down some English songs to me?expecially the beautiful songs. could you help the with the heary box--?A.yes,please