[
  {
    "sentence": "¿_____ tú abrir la ventana, por favor?",
    "correct": "Podrías",
    "distractor": "Puedes",
    "explanation": "Conditional of poder for a polite request.",
    "source_chapter": "43",
    "source_title": "Conditional Tense"
  },
  {
    "sentence": "Yo _____ contigo si tuviera tiempo.",
    "correct": "iría",
    "distractor": "iba",
    "explanation": "Hypothetical → conditional of ir.",
    "source_chapter": "43",
    "source_title": "Conditional Tense"
  },
  {
    "sentence": "Nosotros _____ un plato, por favor.",
    "correct": "querríamos",
    "distractor": "queremos",
    "explanation": "Polite request uses conditional of querer (note double rr).",
    "source_chapter": "43",
    "source_title": "Conditional Tense"
  },
  {
    "sentence": "Sin ti, yo no sé qué yo _____.",
    "correct": "haría",
    "distractor": "hacía",
    "explanation": "Conditional of hacer (irregular stem har-).",
    "source_chapter": "43",
    "source_title": "Conditional Tense"
  },
  {
    "sentence": "Ella _____ la verdad.",
    "correct": "diría",
    "distractor": "decía",
    "explanation": "Conditional of decir uses irregular stem dir-.",
    "source_chapter": "43",
    "source_title": "Conditional Tense"
  },
  {
    "sentence": "¿_____ ellos en esta región?",
    "correct": "Vivirían",
    "distractor": "Vivían",
    "explanation": "Conditional, not imperfect — would they live.",
    "source_chapter": "43",
    "source_title": "Conditional Tense"
  },
  {
    "sentence": "Yo _____ ese coche si fuera barato.",
    "correct": "compraría",
    "distractor": "compré",
    "explanation": "Hypothetical 'would buy' is conditional.",
    "source_chapter": "43",
    "source_title": "Conditional Tense"
  },
  {
    "sentence": "Tú _____ más amigos en una ciudad nueva.",
    "correct": "tendrías",
    "distractor": "tienes",
    "explanation": "Conditional of tener uses stem tendr-.",
    "source_chapter": "43",
    "source_title": "Conditional Tense"
  },
  {
    "sentence": "Yo _____ terminado mi trabajo.",
    "correct": "habría",
    "distractor": "había",
    "explanation": "Conditional perfect uses habría (would have), not había (had).",
    "source_chapter": "44",
    "source_title": "Conditional Perfect Tense"
  },
  {
    "sentence": "Ella habría _____ las ventanas.",
    "correct": "abierto",
    "distractor": "abrido",
    "explanation": "abrir has the irregular participle abierto.",
    "source_chapter": "44",
    "source_title": "Conditional Perfect Tense"
  },
  {
    "sentence": "Tú _____ disfrutado estar ahí.",
    "correct": "habrías",
    "distractor": "habrás",
    "explanation": "Second-person conditional of haber.",
    "source_chapter": "44",
    "source_title": "Conditional Perfect Tense"
  },
  {
    "sentence": "Nosotros _____ venido si nos hubieran invitado.",
    "correct": "habríamos",
    "distractor": "habremos",
    "explanation": "Hypothetical past needs conditional perfect, not future perfect.",
    "source_chapter": "44",
    "source_title": "Conditional Perfect Tense"
  },
  {
    "sentence": "Yo habría _____ la verdad.",
    "correct": "dicho",
    "distractor": "decido",
    "explanation": "decir → dicho (irregular participle).",
    "source_chapter": "44",
    "source_title": "Conditional Perfect Tense"
  },
  {
    "sentence": "Ellos _____ hecho lo mismo.",
    "correct": "habrían",
    "distractor": "han",
    "explanation": "Conditional perfect: habrían + participle.",
    "source_chapter": "44",
    "source_title": "Conditional Perfect Tense"
  }
]