{
  "noteId": "types-of-irregular-verbs",
  "target_count": 30,
  "seed_count": 0,
  "generated_count": 30,
  "exercises": [
    {"sentence": "Yo _____ las llaves ayer. (buscar, preterite)", "correct": "busqué", "distractor": "buscé", "explanation": "-car verbs change c→qu before é in yo preterite."},
    {"sentence": "Yo _____ tarde anoche. (llegar, preterite)", "correct": "llegué", "distractor": "llegé", "explanation": "-gar verbs change g→gu before é in yo preterite."},
    {"sentence": "Yo _____ a estudiar el lunes. (empezar, preterite)", "correct": "empecé", "distractor": "empezé", "explanation": "-zar verbs change z→c before é in yo preterite."},
    {"sentence": "Ella _____ el libro en una hora. (leer, preterite)", "correct": "leyó", "distractor": "leió", "explanation": "i→y between vowels: leer → leyó."},
    {"sentence": "Yo _____ la guitarra cada día. (tocar, present)", "correct": "toco", "distractor": "toqué", "explanation": "Present tense yo toco; the spelling change is in preterite only."},
    {"sentence": "Nosotros _____ ir contigo. (querer, present)", "correct": "queremos", "distractor": "queremos", "explanation": "Nosotros doesn't take the e→ie stem change."},
    {"sentence": "Ella _____ el desayuno temprano. (preferir, present)", "correct": "prefiere", "distractor": "prefere", "explanation": "Stem change e→ie in preferir."},
    {"sentence": "Yo _____ ocho horas cada noche. (dormir, present)", "correct": "duermo", "distractor": "dormo", "explanation": "Stem change o→ue in dormir."},
    {"sentence": "Los chicos _____ al fútbol los sábados. (jugar, present)", "correct": "juegan", "distractor": "jugan", "explanation": "Unique u→ue stem change in jugar."},
    {"sentence": "Yo _____ una pizza, por favor. (pedir, present)", "correct": "pido", "distractor": "pedo", "explanation": "Stem change e→i in pedir (-ir verb)."},
    {"sentence": "El camarero _____ la comida. (servir, present)", "correct": "sirve", "distractor": "serve", "explanation": "Stem change e→i in servir."},
    {"sentence": "Yo no _____ tu nombre. (saber, present)", "correct": "sé", "distractor": "sabo", "explanation": "Saber has irregular yo form: sé (-oy/-é type)."},
    {"sentence": "Yo _____ mucho trabajo hoy. (tener, present)", "correct": "tengo", "distractor": "teno", "explanation": "Tener is a -go verb: tengo."},
    {"sentence": "Yo _____ del trabajo a las cinco. (salir, present)", "correct": "salgo", "distractor": "salo", "explanation": "Salir is a -go verb: salgo."},
    {"sentence": "Yo _____ a mi familia. (conocer, present)", "correct": "conozco", "distractor": "conoco", "explanation": "-cer/-cir verbs add z: conozco (-zco yo form)."},
    {"sentence": "Yo _____ inglés y español. (traducir, present)", "correct": "traduzco", "distractor": "traduco", "explanation": "-ucir verbs take -zco yo form: traduzco."},
    {"sentence": "Ellos _____ que estudiar mucho. (decir, preterite)", "correct": "dijeron", "distractor": "decieron", "explanation": "J-stem preterite of decir: dijeron (no i)."},
    {"sentence": "Ella _____ una película interesante. (traer, preterite)", "correct": "trajo", "distractor": "trayó", "explanation": "J-stem preterite of traer: trajo."},
    {"sentence": "Nosotros _____ por el parque. (pasar, present)", "correct": "pasamos", "distractor": "pasemos", "explanation": "Pasar is regular -ar in present."},
    {"sentence": "Yo _____ el coche en el garaje. (poner, present)", "correct": "pongo", "distractor": "pono", "explanation": "Poner is a -go verb: pongo."},
    {"sentence": "Ella _____ la verdad. (decir, present)", "correct": "dice", "distractor": "dece", "explanation": "Stem change e→i in decir; él/ella dice."},
    {"sentence": "Yo te _____ flores. (traer, present)", "correct": "traigo", "distractor": "trao", "explanation": "Traer is a -go verb (with i): traigo."},
    {"sentence": "Yo _____ el ruido. (oír, present)", "correct": "oigo", "distractor": "oyo", "explanation": "Oír is a -go verb: oigo."},
    {"sentence": "Yo _____ a clase a tiempo. (llegar, present)", "correct": "llego", "distractor": "llegué", "explanation": "Present yo llego; spelling change only in preterite."},
    {"sentence": "Yo _____ la respuesta correcta. (averiguar, preterite)", "correct": "averigüé", "distractor": "averigué", "explanation": "gu→gü to keep the u sound before é."},
    {"sentence": "El profesor _____ los exámenes. (corregir, present)", "correct": "corrige", "distractor": "corrije", "explanation": "Corregir keeps g (not j) before e: corrige."},
    {"sentence": "Yo _____ a los estudiantes. (proteger, present)", "correct": "protejo", "distractor": "protego", "explanation": "g→j before o in proteger: protejo."},
    {"sentence": "Ella _____ la película anoche. (ver, preterite)", "correct": "vio", "distractor": "vió", "explanation": "Preterite vio takes no accent (one syllable)."},
    {"sentence": "Yo _____ a las siete de la mañana. (despertarse, present)", "correct": "me despierto", "distractor": "me desperto", "explanation": "Stem change e→ie in despertar."},
    {"sentence": "Nosotros _____ al fútbol los domingos. (jugar, present)", "correct": "jugamos", "distractor": "juegamos", "explanation": "Nosotros keeps the regular stem: jugamos."}
  ]
}
