Answer: Necesito un favor. Gabriel y Paola PIENSAN viajar al Caribe. Gabriel QUIERE conocer Jamaica, pero Paola PREFIERE ir a República Dominicana porque ella no sabe inglés. Gabriel y Paola ESPERAN resolver sus diferencias. Ellos DEBEN tomar una decisión esta semana porque yo TENGO que comprar los boletos de avión antes del domingo. Yo NECESITO saber adónde viajan: ¿Jamaica o República Dominicana?
Explanation: Just to elaborate a little bit on the answer, it can be added that in this passage a person is asking the reader, or another interlocutor, to make a recommendation for a trip. His friends or his clients are deciding between traveling to Jamaica or to the Dominican Republic. I have written all the verbs in present tense, but you could use the present continuous in the first blank (están pensando). You could also use the conditional tense in several blanks ("Gabriel would like to know," "Paola would prefer," "I would need to know"), but since the speaker says that he has to buy the tickets before Sunday, it is clear that the trip is not just a possibility, but a fact, hence the use of the present tense. The verbs can be translated as: think, want, prefer, hope, must/have to, have to, and need to.