1.His dictionary is on the desk.改为一般疑问句 _____ _____ dictiona

1.His dictionary is on the desk.改为一般疑问句 _____ _____ dictionary on the desk?
2.My computer is (on the desk).对括号内的提问
_____ _____ your computer?
3.The baseballs are under the table.改为否定句
The baseballs _____ _____ under the table.
4.Are the CDs on the table?作否定回答
No,_____ _____.