Answer:
With very few exceptions, the essential parts of a sentence, when written, are similar both in English and Spanish. We need a subject, a verb, or adjective, and complements that enhance the information. In this exercise, you have a series of verbs that are pronomial, but must be changed to become active and actually serve to denominate an action. Thus, in this exercise, your answers, and using the model provided, would be:
1. Miguel/ enojarse/ novia: Miguel se enojó con su novia. The change here is in the word "enojarse".
2. Maria Elena y yo/ dormirse/ a las once: Maria Elena y yo nos dormimos a las once.
3. Antes de/ dormirse,/ ustedes/ cepillarse/ dientes: Antes de dormirse, ustedes deben cepillarse los dientes. In this case, we had to add a modal verb, known in Spanish as an imperativo categórico. They are used to stress importance, like "must" or "have to" in English.
4. ¿(Tú)/ ducharse/ o/ bañarse?: ¿Tú, te duchas o te bañas? In here we add a pronoun and the verb that describes the pronoun.
5. Yo/ ponerse/ triste/ cuando/ tener que/ irse/ de la casa de mi abuela: Yo me pongo triste cuando tengo que irme de la casa de mi abuela.
