1. What subject pronoun would you use when talking about my grandmother?
ellas
yo
ella
vosotras
2. What subject pronoun would you use when talking to your parents?
tú
ellos
usted
ustedes
3. What subject pronoun would you use when talking to your friends?
usted
ellos
tú
ustedes
4. You all (plural, informal, Spain, only male)
nosotras
vosotros
ellas
ellos
5. You all (plural, informal, Spain, all females.)
nosotros
vosotras
ustedes
ellos