句型转换。

1. Is it in the backpack?(作否定回答)

   ________,it ________.

2. Tom's maths book is on the floor.(对画线部分提问)

   ________ ________ Tom's maths book?

3. His baseball is under the table.(改为一般疑问句)

  ________ ________ baseball under the table?

4. His dresser is next to his bed.(改为否定句)

   His dresser ________ ________ next to his bed.

5.My keys are on the sofa.(对面线部分提问)

   ________ ________ my keys?