“买一送一”英文怎么讲？

买一送一
1.two-for-one offer, buy one get one free
2.two for one
3.buy one, get one free
4.two-for-one offer

词典：buy one item with another similar item presented free

口语：Two - for - one offer

buy one get one free

buy one get one for free

Buy one free one
商场里的写法．

buy one get one