Here’s how the words can be categorized based on their ending pronunciations:

**/s/**:
- lamps
- lights
- cooks
- boxes
- pitches
- vases
- wishes
- classes
- chopsticks

**/z/**:
- rooms
- dogs
- houses
- apartments
- dishes
- fridges
- televisions
- photos
- plants
- parents
- clothes
- tables
- sandwiches
- shelves
- toilets
- walls
- villas
- tourists
- attics

**/ɪz/**:
- dishes
- boxes
- wishes
- sandwiches

You can write these words into the corresponding columns based on their pronunciation.