The Plural

Example: I have a mobile phone, but my brother has two mobile phones.
Jessi has a dog, but Julia has two dogs.
Irregular
| Singular | Plural |
| a man | two men |
| a woman | two women |
| a child | two children |
| a mouse | two mice |
| a tooth | two teeth |
| a goose | two geese |
| a foot | two feet |
| a fish | two fish |
® Made by Jessi and Laura
It was easy to understand this article beacause it was short and you had examples. By the way: I like the idea of having some exercises in an article (like your pencil-> pencils exercises at the first picture), so all in all it was a very good article. ;D
I really liked your article, the length was good, you included everything needed and you had some exercises for them to do :)!
But how can they correct the excersises? (Where are the answers?)