Final answer:
The correct form of the verb to complete the sentence is 'bebemos'.
Step-by-step explanation:
The correct verb form to complete the sentence is bebemos, as it agrees with the subject Catalina y yo. The sentence will then read: Catalina y yo bebemos té helado en el café. This sentence translates to: Catalina and I drink iced tea in the café.
Learn more about verb conjugation in Spanish