[
  {
    "sentence": "Yo _____ a la tienda.",
    "correct": "voy",
    "distractor": "vas",
    "explanation": "Yo form of ir is voy.",
    "source_chapter": "13",
    "source_title": "The Verb \"Ir\""
  },
  {
    "sentence": "Nosotros _____ a la universidad.",
    "correct": "vamos",
    "distractor": "van",
    "explanation": "Nosotros form of ir is vamos.",
    "source_chapter": "13",
    "source_title": "The Verb \"Ir\""
  },
  {
    "sentence": "Ellos _____ a trabajar.",
    "correct": "van",
    "distractor": "va",
    "explanation": "Ellos form is van.",
    "source_chapter": "13",
    "source_title": "The Verb \"Ir\""
  },
  {
    "sentence": "Yo voy _____ hacer mi tarea.",
    "correct": "a",
    "distractor": "que",
    "explanation": "ir uses preposition a before an infinitive (near-future).",
    "source_chapter": "13",
    "source_title": "The Verb \"Ir\""
  },
  {
    "sentence": "Voy _____ cine. (a + el)",
    "correct": "al",
    "distractor": "a el",
    "explanation": "a + el always contracts to al.",
    "source_chapter": "13",
    "source_title": "The Verb \"Ir\""
  },
  {
    "sentence": "Tú _____ a la clase.",
    "correct": "vas",
    "distractor": "va",
    "explanation": "Tú form of ir is vas.",
    "source_chapter": "13",
    "source_title": "The Verb \"Ir\""
  },
  {
    "sentence": "I'm going with my friends → Yo voy _____ mis amigos.",
    "correct": "con",
    "distractor": "a",
    "explanation": "No destination, so use con (with), not a.",
    "source_chapter": "13",
    "source_title": "The Verb \"Ir\""
  },
  {
    "sentence": "Mañana yo _____ al cine. (ir)",
    "correct": "iré",
    "distractor": "iba",
    "explanation": "Future of ir (yo): iré.",
    "source_chapter": "41",
    "source_title": "Future Tense"
  },
  {
    "sentence": "Tú _____ una casa. (comprar)",
    "correct": "comprarás",
    "distractor": "compraras",
    "explanation": "Tú future ending is -ás (with accent).",
    "source_chapter": "41",
    "source_title": "Future Tense"
  },
  {
    "sentence": "Él _____ 30 años. (tener)",
    "correct": "tendrá",
    "distractor": "tenerá",
    "explanation": "Tener uses irregular stem 'tendr-'.",
    "source_chapter": "41",
    "source_title": "Future Tense"
  },
  {
    "sentence": "Nosotros _____ español. (aprender)",
    "correct": "aprenderemos",
    "distractor": "aprenderémos",
    "explanation": "Nosotros future has NO accent.",
    "source_chapter": "41",
    "source_title": "Future Tense"
  },
  {
    "sentence": "Ellos _____ si quieren. (venir)",
    "correct": "vendrán",
    "distractor": "venirán",
    "explanation": "Venir uses irregular stem 'vendr-'.",
    "source_chapter": "41",
    "source_title": "Future Tense"
  },
  {
    "sentence": "Yo _____ mi tarea. (hacer)",
    "correct": "haré",
    "distractor": "haceré",
    "explanation": "Hacer uses irregular stem 'har-'.",
    "source_chapter": "41",
    "source_title": "Future Tense"
  },
  {
    "sentence": "Yo te lo _____ mañana. (dar)",
    "correct": "daré",
    "distractor": "doy",
    "explanation": "Future yo of dar is daré.",
    "source_chapter": "41",
    "source_title": "Future Tense"
  },
  {
    "sentence": "Equivalent: 'I'm going to go' = Yo _____ a ir.",
    "correct": "voy",
    "distractor": "iré",
    "explanation": "ir a + infinitive uses present 'voy'.",
    "source_chapter": "41",
    "source_title": "Future Tense"
  }
]