问一个初中的简单英语题：Is that your brother?后面做肯定回答是he is还是it is?

问一个初中的简单英语题：Is that your brother?后面做肯定回答是he is还是it is? Is that Li Lei?做肯定回答是Yes,it is.还是Yes,he is. "Is he your brother?的回答是Yes,it is.还是Yes,he is?如何区别? Is that your brother? Yes,﹍﹍. PS：是填 it is,还是填 he is. ? Is that your aunt 的肯定回答用Yes,she is.还是,Yes,it is,为什么 四年级英语Is+this+your+anut?肯定回答是Yes,it is.还是Yes,she is. Is that your brother?做否定回答 is that your ruler 做肯定回答 that is your twin brother,----?反义疑问句是 isn't he 还是isn't it? Is this boy your brother?(做肯定回答) is the boy your brother?做肯定回答 Is that your brother?回答