Fill in the blanks with the singular or plural form of the noun whichever is appropriate.

1. …………………….. leave every 10 minutes. (Bus / Buses)

2. Where are the …………………………… (knife / knives)?

3. What is in this …………………………… (box / boxes)?

4. Please put away these …………………………… (box / boxes).

5. At least ten ………………………… were lost in the explosion. (life / lives / lifes)

6. ………………………… are pack animals. (Wolf / Wolves)

7. The rich merchant had many …………………………….. (wifes  / wives)

8. Humans have 32 permanent …………………………. (tooth / tooths / teeth)

9. ………………………… is mortal. (Man / Men)

10. Cats chase ………………………… (mice / mouse / mices)

11. I have to get a ……………………….. extracted. (tooth / teeth)

12. The two windows are 12 ………………………… apart. (feet / foot / foots)

Answers

1. Buses (Use a plural noun before a plural verb.), 2. knives, 3. box (Use a singular noun after this and that.), 4. boxes (Use a plural noun after these and those.), 5. lives, 6. wolves, 7. wives, 8. teeth (Teeth is the plural form of tooth.), 9. man, 10. mice (Mice is the plural form of mouse.), 11. tooth, 12. feet (Feet is the plural form of foot.)