Final answer:
ASL keeps the appropriate /-'s/ in two situations: plurals and possessives.
Step-by-step explanation:
American Sign Language (ASL) keeps the appropriate /-'s/ in two situations:
- Plurals: ASL uses the /-'s/ suffix to indicate plurality, just like in English. For example, 'books' would be signed as 'BOOKS+'.
- Possessives: ASL uses the /-'s/ suffix to indicate possession. For example, 'John's car' would be signed as 'JOHN CAR+', with a pause after the 'JOHN' sign to indicate the possessive.