15. A Cat / A Kitten
This That These Those
Those are cats.
16. Attention!
a ball
a pen
a delicious sandwich
a kiss
a country
a good dictionary
Singular Plural
ballS
penS
delicious sandwichES
kissES
countrIES
good dictionarIES
17. This is a book.
These are books.
That is a pencil.
Those are pencils.
It is a pen.
They are pens.
I am a teacher.
We are teachers.