句型转换。

1. The boy is my friend? (改成一般疑问句)

   ________ your friend?

2. It's Lucy's dictionary. (改为否定句)

    It ________ Lucy's dictionary.

3. These are their sisters.(改为单数句)

    ________ her ________ .

4. Those are my books.(对划线部分提问)

    ________ those?

5. The girl is Anna.(同义句)

    The________Anna.