句型转换。

1. That is my sister. (改为一般疑问句)

     ______ ______  ______ sister?

2. That is her brother. (改为否定句)

    That ______ ______ brother.

3. This is her friend. (改为复数形式)

      ______  ______ her ______.

4. They are my father's sisters.(改为同义句)

    They ______  my ______.

5.This is my grandmother and this is my grandfather.(改为同义句)

    These ______ my ______.