I have a scissor.
I have scissors.
I have a papers.
I have papers.
I have a two sharpeners.
I have two sharpeners.
I have a eraser.
I have an eraser.
I have a green ruler.
I have a blue ruler.
I have glues.
I have a glue.
I have a pen.
Correct
I have a keyboards.
I have a keyboard.
I have a crayon.
I have three crayons.
I have paint.
I have paints.
I have an computer.
I have a computer.
I have a dictionary.
I have dictionaries.
I have three folders.
I have a folder.
I have pencil case.
I have a pencil case.
I have school bag.
I have a school bag.
I have books.
I have a book.
I have nine pencil.
I have nine pencils.
I have a notebook.
I have notebooks.