Plural of nouns

1.   There are many ___ in the big cities.
   thiefs     thieves
2.   We should throw away these old ___ .
   teeth brush     tooth brushes     teeth brushes
3.   ___ and ___ are animals.
   oxes; geese     oxen; geese     oxen; gooses
4.   Did you buy two silk ___ for your sister?
   scarfs     scarves
5.   The ___ of those tribes decided to fight for their lands.
   chieves     chiefs
6.   You shouldn't base your argument only on your ___ .
   hypothesis     hypotheses
7.   We can't question people's ___ .
   beliefs     believes
8.   Two ___ (wolf) are following the eskimo.
   wolfs     wolves
9.   Scientists are always studying the ___ (phenomenon) of nature.
   phenomenons     phenomena
10.   That hunter killed six ___ last week.
    deers     deer
11.   How many ___ study English as a second language?
    people     persons
12.   Five ___ opened a computer services company.
    woman     women
13.   Even ___ enjoy learning on the Internet.
    child    children
14.   Most basketball players are 6 ___ tall or more.
    foot     feet
15.   Which breed of ___ produces the finest wool?
    sheep     sheeps
16.   My ___ are sensitive to the cold.
    tooth     teeth
17.   At daylight savings time, we have to change our ___ .
    watches     watch
18.   The boys went fishing and caught 10 ___ .
    fish    fishes
19.   There are 10 ___ in the Maintenance Department.
    man     men
20.   The ___ keep their ___ on the ___ .
    housewife, knife, shelf    housewives, knives, shelves
     
     Solutions
    
     1. thieves
     2. tooth brushes
     3. oxen; geese
     4. scarves
     5. chiefs
     6. hypotheses
     7. beliefs
     8. wolves
     9. phenomena
    10. deer
    11. people
    12. women
    13. children
    14. feet
    15. sheep
    16. teeth
    17. watches
    18. fish
    19. men
    20. housewives, knives, shelves