其实两种回答都可以,在口语里面,没必要去死抠语法!主语是your shoes!
it is black 好点 ,我觉得鞋子是一双整体出现的,所以用it is black。
应该是 they are 主语是 your shoes
主语 your shoesit is black 好点
shoes是复数,应该是they