I can never express my thanks to you.How can I ever pay you------_英语解答

I can never express my thanks to you.How can I ever pay you---------?(横线中填介词）请说明原因

人气：262 ℃　时间：2020-06-07 03:02:36

解答

back 词组是pay back 吗？什么意思啊这句话可以翻译下么我该怎么报答你？