句型转换。

1. Is there some bread in the box? (同义句)

   _______ _______ bread in the box?

2. What is he?(改为同义句)

    _______ _______ he_______ ?

3. Mary likes writing interesting stories for children. (变为否定句)

    Mary _______ _______ _______ interesting stories for children.

4. My friend works in a hospital. (就画线部分提问)

    _______ _______ you friend _______?

5. He brings me a newspaper. (变为同义句)

    He _______ a newspaper _______ me.

振动台只能作前后方向的走向振动，适用于混凝土预制构件的振捣。