3. Fernando va a ir al parque a las cuatro de la tarde.
4. Doña Inés y don Mario van a comer en el café Alameda.
Explanation:
1. This a present tense sentence the key is look for the conjugation for the subject "yo"(me) and the verb "ir". In this case the verb Ir for "yo"is voy.
2. Carmela y yo is the subject "nosotros" the conjugation for the verb "ir" is vamos.
3. This a future tense sentence, because Fernando has a time to go (4pm) the conjugation for the verb "ir" is va in present tense for the subject "el".
4. Doña Inés y don Mario are the subject ellos. The conjugation for the verb "ir" is van.
