Is that your brother? Yes,( )is.首先来分析这道题。肯定是错的。因为Is that 或者Is this都必须用Yes|No,it is|isn'tIs she|he……用Yes|No,he|she is|isn't。这么说你明白了嘛?“Is thant your father?回答Yes,it is.No,it isn't.我们英语老师说还能用Yes,he is.No,he isn't.做回答可是还有个英语老师说不能用。”你们第一个老师说的是错的,第二个老师说的是对的也许是口误吧