What is the plural of 'cactus'?
Cacti
What is the plural of 'ox'?
Oxen
What is the plural of 'octopus'? (2 options)
Octopi or octopuses
What is the plural of 'crisis'?
Crises
What is the singular of 'criteria'?
Criterion
What is the singular of 'species'?
Species
What is the plural of 'matrix'?
Matrices
What is the plural of 'bureau'? (2 options)
Bureaus or bureaux
What is the singular of 'data'?
Datum
What is the singular of 'moose'?
Moose