I guess the sentence could be....... "I am finishing my homework!(저는 숙제를 끝낼 거예요)" (jeo-neun suk-je-reur kkeut-naer geo-ye-yo) or "I (have) finished my homework!(저는 숙제를 끝냈어요)" (jeo-neun suk-je-reur kkeut-naess-eo-yo) \^o^/