El verbo 'ser' en español es utilizado para expresar la existencia o el estado de algo o alguien. Se conjuga coincidiendo en género y número con el sujeto o el objeto dependiendo de que función esté cumpliendo el sustantivo.
The verb 'ser' (to be) in Spanish is used to express the existence or state of someone or something. It's conjugated to agree in gender and number with the sentence's subject or object depending on its function as a noun.
The verb ending is the only thing that changes in present tense form, depending on who does the action. In this case, it is talking about "you" or "tu" meaning that it will end in "-es", or "haces". Therefore the answer would be:
