Final answer:
The subject of this question is Spanish. The student is asked to conjugate the verb volver into the conditional tense.
Step-by-step explanation:
The subject of this question is Spanish. The question is asking the student to conjugate the verb volver into the conditional tense. The sentence provided is: ÉI (volver) en seguida pero no hay vuelo hasta el martes. To conjugate volver into the conditional tense, we would use the conditional form of the verb. In this case, it would be: volvería.
Learn more about Conjugating verbs in Spanish