The plural way to spell studio is studios.
plural.
The plural of activity is activities.
The plural form of "radish" is "radishes."
The plural possessive for the noun dish is dishes'.
The plural form of Cameron is Camerons.
languages
Halos is the correct way to spell the plural form.
apples, Orange, lemons, biskit (if you spell it that way!), cookie.
geese
cockroach (plural cockroaches.)
Just that way.