I just want to say that your doing amazing and I hope that your doing good in school keep it up
4. Hago
5. Entregó
6. Se
7. Voy
The second answer. Because “sus” is the only one which has the “s” because it is plural. If it would be “nuestro” it should had an “s” like “nuestros hijos son altos” or “tus hijos son altos”
1-los estudiantes están haciendo su trabajo
2-Maria es bonita y alta