[
  {
    "sentence": "Este regalo es para _____.",
    "correct": "mí",
    "distractor": "yo",
    "explanation": "After preposition 'para', use mí, not yo.",
    "source_chapter": "16",
    "source_title": "Prepositional Pronouns"
  },
  {
    "sentence": "¿Quieres ir _____?",
    "correct": "conmigo",
    "distractor": "con mí",
    "explanation": "con + mí combines into conmigo.",
    "source_chapter": "16",
    "source_title": "Prepositional Pronouns"
  },
  {
    "sentence": "Sí, voy _____.",
    "correct": "contigo",
    "distractor": "con ti",
    "explanation": "con + ti combines into contigo.",
    "source_chapter": "16",
    "source_title": "Prepositional Pronouns"
  },
  {
    "sentence": "El libro es de _____.",
    "correct": "él",
    "distractor": "lo",
    "explanation": "After de, use the prepositional pronoun él (with accent).",
    "source_chapter": "16",
    "source_title": "Prepositional Pronouns"
  },
  {
    "sentence": "Esto es para _____.",
    "correct": "nosotros",
    "distractor": "nos",
    "explanation": "After 'para', use the prepositional pronoun nosotros.",
    "source_chapter": "16",
    "source_title": "Prepositional Pronouns"
  },
  {
    "sentence": "Entre tú y _____, no hay problema.",
    "correct": "yo",
    "distractor": "mí",
    "explanation": "After 'entre', Spanish uses subject pronouns yo and tú.",
    "source_chapter": "16",
    "source_title": "Prepositional Pronouns"
  },
  {
    "sentence": "Ella va _____.",
    "correct": "con ellos",
    "distractor": "conellos",
    "explanation": "Only mí and ti combine with con; con ellos stays separate.",
    "source_chapter": "16",
    "source_title": "Prepositional Pronouns"
  }
]