Answer:
Antes de que deba hacerse.
1. Tu
2. Nosotros
3. El
4. Yo
5. Ellos
6. Yo
7. Tu
8. Nosotros
9. Ana
10. Gregorio
1. On Monday,vclass started at 8:15. During the Winter, class always started at 9 in the morning.
2. At half past three in the afternoon it started raining.
3. Since he finished his homework
early, Luis visited his aunt in the afternoon.
4. Ana María visited her aunt every sunday.
5. They were too tired and decided to stop for a moment.
6. Magdalena lived un the city of Cali between 2000 and 2005.
7. I'm finally done! I've dusted everything, washed the dishes and took out the trash.
8. When I was a boy, I studied in a billingual school.