Prepositions of place

This is my bedroom. There's a ball ______my bed.

And there's a CD (2) ................ my bed.

 There's a computer _______ the desk

There are some flowers .................. the computer.

There's a bin ______the desk 

There's a shelf_______the wall.

There are some on the shelf and there's a radio _____the books.

I love my room