Final answer:
The correct verb form to complete the sentence is "bebemos".
Step-by-step explanation:
The correct form of the verb to complete the sentence is bebemos. The sentence should read: Nosotros bebemos limonada. The verb bebemos is the first person plural form of the verb beber (to drink) in the present tense. It agrees with the subject nosotros (we). It is used when referring to a group of people including the speaker.
Learn more about Verb conjugation in Spanish