The plural of the following

Subdivision
Maid of honour
Senior
Advocate
Grown up
Fountain
Pen
Appendix
Diagnosis
Nightmare
Scenario
Scavenger bird
Tenancy agreement

1 answer

Subdivisions
Maids of honour
Seniors
Advocates
Grown ups
Fountains
Pens
Appendices
Diagnoses
Nightmares
Scenarios
Scavenger birds
Tenancy agreements