Final answer:
The sentence is correct in Spanish. Carlos promised a new house to Lucy.
Step-by-step explanation:
The sentence “Carlos prometi una nueva casa a Lucy” is correct in Spanish. It translates to “Carlos promised a new house to Lucy.” In this sentence, “Carlos” is the subject who promised something to “Lucy.” This sentence follows the correct structure of a subject (Carlos) + verb (prometi) + object (una nueva casa) + recipient (Lucy).
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