Answer:
The right answer is, Limpiamos.
* Mi papá y yo limpiamos muy bien la cocina anoche.
Explanation:
The sentence describes actions carried out in the past using the preterito tense, therefore it is important to identify the person, gender and number in the sentence to be able to logically conjugate the verb and to be consistent with what is being expressed.
Va hacer el núcleo y la respuesta infinitivo también sujeto