Put in one or ones (instead of nouns) where it is possible:

 

I

II

III

IV

V

VI

VII

VIII

IX

Jack's snowboard is old. He wants to buy a new snowboard.

All the table-tennis balls are broken. Sarah needs some new table-tennis balls.

Which bike belongs to you?  -  The small bike.

Don't buy small bottles. Big bottles are cheaper.

Which is your bag? - The red bag near the door.

Jill has two dogs, an old dog and a young dog.

The old darts are missing.  -  Use the new darts.

The blue shirt is nicer than the pink shirt.

Which are your trainers?  -  The old trainers.