let's start () your dog's tail.填什么?to?at?with?by?

let's start () your dog's tail.填什么?to?at?with?by?
let's start () your dog's tail.填什么?to?at?with?by?

let's start () your dog's tail.填什么?to?at?with?by?
start with 固定搭配,从xxx开始
但是没有上下文不好翻译这句话.