[
  {
    "sentence": "Yo _____ como pescado.",
    "correct": "no",
    "distractor": "nada",
    "explanation": "Basic negation puts 'no' before the verb.",
    "source_chapter": "35",
    "source_title": "How Negatives Work"
  },
  {
    "sentence": "No conozco _____ aquí.",
    "correct": "a nadie",
    "distractor": "nadie",
    "explanation": "Direct-object person needs personal a: a nadie.",
    "source_chapter": "35",
    "source_title": "How Negatives Work"
  },
  {
    "sentence": "Ella _____ llega tarde.",
    "correct": "nunca",
    "distractor": "no nunca",
    "explanation": "When the negative word goes before the verb, no extra 'no' is needed.",
    "source_chapter": "35",
    "source_title": "How Negatives Work"
  },
  {
    "sentence": "No tengo _____ libro sobre eso.",
    "correct": "ningún",
    "distractor": "ninguno",
    "explanation": "Before a singular masc. noun, use the apocopated ningún.",
    "source_chapter": "35",
    "source_title": "How Negatives Work"
  },
  {
    "sentence": "—Yo no quiero ir. —Yo _____.",
    "correct": "tampoco",
    "distractor": "también",
    "explanation": "Negative agreement uses tampoco (me neither).",
    "source_chapter": "35",
    "source_title": "How Negatives Work"
  },
  {
    "sentence": "No quiero _____ café _____ té.",
    "correct": "ni / ni",
    "distractor": "o / o",
    "explanation": "Negative pair is ni…ni.",
    "source_chapter": "35",
    "source_title": "How Negatives Work"
  },
  {
    "sentence": "¿Viste a _____ en la fiesta? — No, no vi a _____.",
    "correct": "alguien / nadie",
    "distractor": "nadie / alguien",
    "explanation": "Use alguien in the question and nadie in the negative answer.",
    "source_chapter": "35",
    "source_title": "How Negatives Work"
  },
  {
    "sentence": "Ellos no comen _____ por la mañana.",
    "correct": "nada",
    "distractor": "no",
    "explanation": "Double negative: 'no…nada' = don't eat anything.",
    "source_chapter": "35",
    "source_title": "How Negatives Work"
  }
]