Lee el siguiente texto y responde las preguntas:
Texto: Last summer, Mark went on vacation to Spain. He spent two weeks there with his friends, and they visited many beautiful cities. They went to Barcelona, Madrid, and Seville. In Barcelona, they saw the famous Sagrada Familia and spent time at the beach. In Madrid, they visited museums and parks, while in Seville, they enjoyed the traditional Spanish food. Mark was amazed by the culture and history of Spain. He wants to go back next summer to explore more of the country.
How long did Mark stay in Spain?