If your friend said "Tengo sed," which means "I'm thirsty," you could offer them various drinks. Here are some options you could suggest:
- Agua (water)
- Jugo (juice)
- Soda (soda)
- Té (tea)
- Cafe (coffee)
- Leche (milk)
- Limonada (lemonade)
- Batido (milkshake/smoothie)
You could ask if they have a preference for any specific type of drink as well!