1 notebook -- 3 ______________
notebooks
1 backpack --2 _____________
backpacks
1 pencil -- many _____________
pencils
1 ruler -- 2 ____________
rulers
1 pen -- 10 _________
pens
1 door -- 2 __________
doors
1 sharpener -- 10 ____________
sharpeners
1 chair -- 6 ___________
chairs
1 board -- 4 _______________
boards
1 student -- 2 ____________
students
1 eraser -- 2 _________
erasers
1 window -- many ______________
windows
1 desk -- many _____________
desks
1 classroom -- 5 ______________
classrooms
1 book - many ________
books