Answer:
Tu vas a asistir a la reunion?
Step-by-step explanation:
The phrase "ir a + verb" is a construction in Spanish that is used to express future actions or intentions. In this case, the verb that best fits in the blank is "asistir" which means "to attend" in English. Therefore, the sentence "¿Tú vas a asistir a la reunión?" translates to "Are you going to attend the meeting?"