根据答语写出问句。 1.---_________________________

问题：

根据答语写出问句。

1.---________________________________________________

  --- It's a book.

2. --- ________________________________________________

  --- I'm fine, thanks.

3. --- ________________________________________________

  --- They're arms.

4. --- ________________________________________________

  --- Yes, it's my ball.

5. --- ________________________________________________

  --- No, an eye.