1. Mi Familia estaba en Santa Fe cuando yo nací.
2. Nosotros vivíamos en San Diego cuando yo empecé la Escuela Primaria.
3. Yo conocí a mi mejor amiga cuando yo estaba en la escuela secundaria.
4. Yo tenía dieciséis años cuando yo aprendí a conducir.
5. Cuando yo gradúe de la escuela secundaria, yo quería trabajar en un hospital.
Answer: Question 1 is A. C is wrong because without much notice would be informal. B is wrong because posting it on the newspaper it would be visible to everyone even people you don't know.
Question 2 The answer would be B because Madrid is the largest city in Spain. Answer A and C is wrong because both of them are true.
Question 3 the answer is B. Sorry I can't give an explanation I have to go. Let me know if these answers are correct.
Explanation: