Final answer:
The correct verb form to fill in the blank is 'limpias'.
Step-by-step explanation:
The correct verb form to fill in the blank is limpias. The subject 'Tú y yo' is the second person plural pronoun, so the verb form should agree with that. In this case, the correct verb form is the second person plural familiar, which is 'limpias'.
Learn more about verb forms in Spanish