Final answer:
The correct form of the verb to complete the question is 'prendrons', which is the first-person plural of the future tense of the verb 'prendre' (to take).
Step-by-step explanation:
The correct form of the verb to complete the question is prendrons. The verb prendrons is the first-person plural of the future tense of the verb prendre, which means 'to take' in English. This form indicates that 'we' will take (fly) from a certain location to go to Europe next year.
For example, the complete question could be: Où est-ce que nous prendrons l'avion? (Where will we take the plane from?)
Learn more about Correct form of French verb 'prendre' to indicate location of departure