C) Преобразуйте подчеркнутые существительные в единст¬венное число и произведите все необходимые изменения.
1. The wolves are stronger than the foxes.
2. The leaves are on the trees.
3. The oxen are in the yards.
4. The beautiful flowers are in the gardens.
5. There are some people in the classrooms.
6. The cases are in the lost-property offices.