Example: Exercise 7 – Preterite vs. Imperfect You wrote: “Cuando era niño, a México.” Key says: “Cuando era niño, iba a México.” Your note: “Habitual past action → imperfect, not present perfect.”
Rarely, typos or alternate valid answers exist. If an answer seems wrong (e.g., a reflexive pronoun missing when both options are possible), consult a native speaker or a Spanish grammar forum. 3 aula internacional plus answer key
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