Choose the only correct plural form in each group.

1. a) tooth b) teeth c) teethes d) toothes
2. a) mapes b) beees c) prizes d) bookes
3. a) stomaches b) epoches c) monarches d) benches
4. a) armies b) daies c) dayes d) armys
5. a) leafs b) roofs c) believes d) wifes
6. a) zooes b) photoes c) sopranos d) potatos
7. a) childrens b) sheeps c) childs d) oxen
8. a) criterion b) criteria c) criterias d) criteriaes
9. a) phenomenon b) crisis c) analysis d) thesis
10. a) man b) goose c) mice d) woman