Final answer:
In Spanish, the subjunctive form of the verb is used to express desires, emotions, doubts, and hypotheses.
Explanation:
The correct verb to complete the sentence is "llueva" to agree with the subjunctive form in Spanish. The sentence should read: "El granero está enfadado que llueva tanto." In this case, the verb "llueva" is conjugated in the present subjunctive to match the subject and express discontent or anger.
Learn more about Conjugation of verbs in subjunctive form here:
https://brainly.com/question/49242964
