How about buy one and get one free?买一送一怎么样?在大学阶段 是否有语法错误

How about buy one and get one free?买一送一怎么样?在大学阶段 是否有语法错误 Buy One,Get One Free!啥意思 buy for one get one free啥意思? Buy-One-Get-One- The CDs are on sale!Buy one and you get completely free.ks5u Buy One Get One 50% Off,Mix and Match! 靓女跑去问上帝：buy one get one free是英语吗?上帝 How about that one? “Do you know you can buy two pairs of jeans get one free in If you buy one,you can get another free of c___(缺词填空） 英语翻译One of the most popular and free website to buy and sell How much for this 到底有没有语法错误?How much for this one?有语法错误吗?