Образуйте форму множественного числа

Ответ:

1- baby's

2- portes

3- piloted

4- factorys

5- cameras

6- cars

7- sandwiches

8- pianos

9- halfes

10- students

11- discos

12- roofes

13- apples

14- wolfs

15- oxes

16-womans

17- oranges

18- patches