Упражнение

1. child — ______
2. sheep — ______
3. foot — ______
4. man — ______
5. basis — ______
6. mouse — ______
7. criterion — ______
8. corps — ______
9. formula — ______
10. index — ______

1. child — children
2. sheep — sheep
3. foot — feet
4. man — men
5. basis — bases
6. mouse — mice
7. criterion — criteria
8. corps — corps
9. formula — formulae (или formulas)
10. index — indeces (или indexes)