- Which shopping request is written correctly?
Answer: Eu gostaria de duas garrafas de água.
Gostar requires "de", and garrafa is feminine, so it is "duas garrafas". The version without "de" is tempting because English says "I would like two bottles" with no preposition.
- Complete the request at a market: "Eu ___ um quilo de tomates, por favor."
Answer: quero
With eu, querer becomes "quero": "Eu quero um quilo de tomates." The form "quer" is tempting because it is common in questions like "Você quer?", but it goes with você or ele, not eu.
- You want twelve eggs at the market. Complete: "Uma ___ de ovos, por favor."
Answer: dúzia
Eggs are sold by the "dúzia" (a dozen), so "Uma dúzia de ovos" means twelve eggs. "Dezena" looks similar but means a group of ten, and "doze" is just the number, not a noun.