It's my faults,fault加复数可以么

It's my faults,fault加复数可以么 It's my fault, all my faults还是all my fault It’s not my fault. It's my fault ,I'm sorry. It's my fault,please pardon me It's not my fault可不可以改成It isn't my fault? It's not my fault还是that's not my fault she's so beautiful,it's my fault. It is my mistake...可以这样用吗 资料上说fault mistake error 不能在It is s it‘s my fault口语什么情况说 英语完形It's my own fault的翻译