Образовать множественное число.
table
raincoat
penholder
stepsister
matacar
classmate
grandfather
toothbrush
test
place
armchair
bookcase
nose
toy
play
carriage
fly
idea
library
brr
watch
life
family
chair
boot
hotel

toothbrush- toothbrushesfly- flieslibrary- librarieswatch- watcheslife- livesfamily- familiesbrr???в остальных случаях просто прибавляешь  s