Grammar test "MAKE A PLURAL FORM"

1. MAKE A PLURAL FORM                                  

alumnus - ________________________ bacterium - _______________________ cactus - __________________________ casino - __________________________ crisis - ___________________________ datum - __________________________ deer - ___________________________ elephant - ________________________ fox - _____________________________ fungus - _________________________ goose - __________________________ hero - ___________________________ hippo - __________________________ hoof - ___________________________ kidney - __________________________ larva - ___________________________ library - __________________________ louse - __________________________ mouse - _________________________ nebula - _________________________ oasis - __________________________ octopus - ________________________ olive - ___________________________ ox - _____________________________ phone - _________________________ photograph - ____________________ sheep -  _______________________ shrimp - ________________________ sofa - __________________________ tax - ___________________________ thesis - _________________________ thief - __________________________ tooth - _________________________ trout - __________________________ virus - __________________________ volcano - _______________________ website - _______________________