Answer:
<u>Visité</u> al mostrador de la aerolínea. <u>Mostré</u> el pasaporte. <u>Dejé</u> las maletas, y <u>recibí</u> la tarjeta de embarque.
Explanation:
The sentence is in the singular, because it's the action that a person is taking.
Greetings.
The answer should be "debes" but I'm not sure
Good luck!
I believe the answer is the first one. I'm sorry if I'm wrong
