改错：Could you tell me how much did he pay for the new jeans?

Excuse me,could you tell me how to turn on it?句子改错 could you please tell me 改错：Could you tell me how much did he pay for the new jeans? Could you tell me when does the plane leave?(改错）到底是什么 Could you please tell me the way of the post office 改错 Could you tell me when does she plane leave?(改错） (Could) you tell me if (will they) travel to Beijing (this weekend).改错 句子改错：could you tell me what this desk is made in? 改错Nobody knows how the stange machine looks like .could you tell me something about it? could can you tell me?can you tell me?could you tell me?区别? Could you tell me about you? could you tell me you telephone number? Could you to help me,please.(改错) Could you to help me,piease?改错 Could you tell me your home ____number Could you tell me something about your Could you tell me when (start) tomrrow Could you tell me your name?回答------