it cost需要加s吗

it cost需要加s吗 cost 什么时候加s cost作为“成本”讲时,复数可加s吗? this house cost me 9000 dollars..cost后面加s吗 I wonder how much it cost( ) 括号内是否要加S? cost要加s吗亲  living costs与the cost of living一样吗?cost是可数吗,后面可以加s吗? The book cost me 10$.cost要家s吗? 主语是第三人称单数,动词COST为什么不用加S sth. cost sb. +价钱中,当sth.为sth.单三时,cost要不要加s The bike cost me 100yuan .中的COST不用加S? 专业外贸英语翻译It's shipping cost and duty cost that has the price