{
  "noteId": "double-negatives",
  "target_count": 30,
  "seed_count": 8,
  "generated_count": 22,
  "exercises": [
    {"sentence": "Yo _____ como pescado.", "correct": "no", "distractor": "nada", "explanation": "Basic negation puts 'no' before the verb."},
    {"sentence": "No conozco _____ aquí.", "correct": "a nadie", "distractor": "nadie", "explanation": "Direct-object person needs personal a: a nadie."},
    {"sentence": "Ella _____ llega tarde.", "correct": "nunca", "distractor": "no nunca", "explanation": "When the negative word goes before the verb, no extra 'no' is needed."},
    {"sentence": "No tengo _____ libro sobre eso.", "correct": "ningún", "distractor": "ninguno", "explanation": "Before a singular masc. noun, use the apocopated ningún."},
    {"sentence": "—Yo no quiero ir. —Yo _____.", "correct": "tampoco", "distractor": "también", "explanation": "Negative agreement uses tampoco (me neither)."},
    {"sentence": "No quiero _____ café _____ té.", "correct": "ni / ni", "distractor": "o / o", "explanation": "Negative pair is ni…ni."},
    {"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."},
    {"sentence": "Ellos no comen _____ por la mañana.", "correct": "nada", "distractor": "no", "explanation": "Double negative: 'no…nada' = don't eat anything."},
    {"sentence": "No me dijo _____ sobre el problema.", "correct": "nada", "distractor": "algo", "explanation": "After 'no' use the negative counterpart: algo → nada."},
    {"sentence": "_____ sabe la respuesta correcta.", "correct": "Nadie", "distractor": "No nadie", "explanation": "When the negative comes before the verb, no extra 'no' is added."},
    {"sentence": "No he visitado Japón _____.", "correct": "jamás", "distractor": "siempre", "explanation": "Jamás reinforces 'never' after 'no'."},
    {"sentence": "_____ tienda está abierta los domingos.", "correct": "Ninguna", "distractor": "Nada", "explanation": "Ninguna agrees with the feminine noun 'tienda'."},
    {"sentence": "No queda _____ en la nevera.", "correct": "nada", "distractor": "ninguno", "explanation": "Use 'nada' for things in general, not a specific noun."},
    {"sentence": "Ella no come carne y yo _____.", "correct": "tampoco", "distractor": "también", "explanation": "Tampoco mirrors a previous negative ('me neither')."},
    {"sentence": "No tengo _____ amiga en esta ciudad.", "correct": "ninguna", "distractor": "ningún", "explanation": "Ninguna agrees with the feminine noun 'amiga'."},
    {"sentence": "_____ quiero ir contigo.", "correct": "Tampoco", "distractor": "También", "explanation": "When the negative comes first, no extra 'no' is needed."},
    {"sentence": "Mi hermano no estudia _____ trabaja.", "correct": "ni", "distractor": "o", "explanation": "Negative 'neither/nor' uses ni, not o."},
    {"sentence": "No le he dicho _____ a mis padres.", "correct": "nada", "distractor": "algo", "explanation": "After 'no', use 'nada' instead of 'algo'."},
    {"sentence": "_____ me ayudó con la tarea.", "correct": "Nadie", "distractor": "No nadie", "explanation": "Pre-verbal negative needs no extra 'no'."},
    {"sentence": "No queda _____ en el almacén.", "correct": "ninguno", "distractor": "ningún", "explanation": "Ninguno is used as a pronoun (without a noun after it)."},
    {"sentence": "_____ he comido sushi en mi vida.", "correct": "Nunca", "distractor": "No nunca", "explanation": "Pre-verbal 'nunca' needs no extra 'no'."},
    {"sentence": "Ese restaurante no abre _____ los lunes.", "correct": "nunca", "distractor": "siempre", "explanation": "After 'no', use 'nunca' to mean 'never'."},
    {"sentence": "No vi a _____ en el parque.", "correct": "nadie", "distractor": "alguien", "explanation": "After 'no', use the negative 'nadie'."},
    {"sentence": "No tengo _____ ganas de salir hoy.", "correct": "ningunas", "distractor": "ninguna", "explanation": "Ningunas agrees with feminine plural 'ganas'."},
    {"sentence": "No me gusta _____ el café _____ el té.", "correct": "ni / ni", "distractor": "no / no", "explanation": "Negative coordination uses ni…ni."},
    {"sentence": "_____ de mis amigos llegó a tiempo.", "correct": "Ninguno", "distractor": "Nadie", "explanation": "Ninguno (de) refers to a specific group; nadie is general."},
    {"sentence": "No conozco a _____ en esta clase.", "correct": "nadie", "distractor": "alguien", "explanation": "After 'no', use 'nadie' (not 'alguien')."},
    {"sentence": "Ella no estudia _____ por la noche.", "correct": "nunca", "distractor": "siempre", "explanation": "After 'no', the negative 'nunca' completes the double negative."},
    {"sentence": "_____ pasó nada raro durante la noche.", "correct": "No", "distractor": "Nunca", "explanation": "Use 'no' before the verb when 'nada' follows it."},
    {"sentence": "No leo _____ revistas _____ periódicos.", "correct": "ni / ni", "distractor": "y / y", "explanation": "Negative version of 'and' uses ni…ni."}
  ]
}