Habia because Habia means there were. On the other hand we have contaba which men tell, saludaba which mean said hi, and nacia which means born. so your best bet is Habia
1: Elisa trabajo hasta tarde
2: Yo salí para la casa de mis tíos
3: Carlos y Lupe estudiaron para un examen
4: Mi hermano fue al dentista
5: Mamá estaba enferma
6: Leti y Jimena asistieron a un concierto
7: Mateo y Ramón perdieron las llaves del caro
Answer:
Which questions do you need help with?
You would need to work out different Spanish words in the different sentences and put them together