we need more to it. that wont get you answer you are looking for.
When talking to anyone that has an occupation like a teacher (so teachers, doctors etc.) You always use the formal conjugation of that word. So the answer is Usted
<span>Apply early for a passport, or renew your old one. ...If you are traveling by land or sea, you must show proof of both your U.S. citizenship and your identity when you return to the United States. ...<span>You may need to get a visa before you travel to a destination.</span></span>
