a pencil sharperer – pencil
a picture -picturs
a clock – clocks
a paper clip – paper clips
a workbook – workbooks
a door – doors
a window – windows
a calendar – calendars
`
a pencil sharperer – pencil
a picture -picturs
a clock – clocks
a paper clip – paper clips
a workbook – workbooks
a door – doors
a window – windows
a calendar – calendars
`