1. el, because it's 1 boy
2. ellos, because it's 2 people of mixed genders
3. nosotros, because it's myself and one other person
4. ella, because it's 1 girl
5. ellos, because it's multiple boys
6. ella, because it's 1 girl
7. el, because it's 1 boy
8. ellas, because it's multiple girls
9. nosotras, because it's 2 girls including myself
10. el, because it's one boy