1 That is my sister.改爲一般疑問句 2 That is her brother.改爲否定句

題目：

1 That is my sister.改爲一般疑問句 2 That is her brother.改爲否定句

解答：

1 That is my sister.改爲一般疑問句
Is that my sister?
2 That is her brother.改爲否定句
That isn't her brother.