Understanding Plurals with the Same Word

Which of the following words remains the same in both singular and plural forms?

• Dog

• Fish

• Bird

• Cat

What is the plural form of 'deer'?

• Deerly

• Deeres

• Deer

• Deers

Which of these words does not change when pluralized?

• Car

• Hovercraft

• Tree

• House

How do you pluralize 'species'?

• Specie

• Species

• Specia

• Speci

What is the plural form of 'spacecraft'?

• Spacecrafts

• Spacecrafting

• Spacecraft

• Spacecraftes