Final answer:
The correct form of the verb is 'hablamos' because the action happened last night.
Step-by-step explanation:
The correct form of the verb in parentheses is hablamos. The time cue in the sentence is 'anoche', which means 'last night' and indicates that the action took place in the past. Therefore, we use the preterite tense, which is formed by conjugating the verb 'hablar' to 'hablamos' when referring to 'David y yo'.
Learn more about Spanish verb conjugation