将下列句子按要求进行转换。
1. Where's my book? (改为复数句子)
_______ _______ my _______?
2. They are on the sofa. (改为单数句子)
_______ _______ on the sofa.
3. My baseball is under the chair. (对画线部分提问)
_______ _______ your baseball?
4. Are her pens on the dresser?(做否定回答)
No, _______ _______.
5. The baseball is under the bed. (改为一般疑问句)
_______ _______ _______ _______ the bed?