Hi guys, i have a question about Korean: i am preparing for TOPIK and i have a sentence here: 시간이 없어서 독서량이 부족해지는 것으로 나타났다. Can so please explain why they use 부족해지는 but not 부족해진 것. i leaned that 부족해지다 is a verb, and they not have patchim, so why dont we use 부족해진 ? Thank you <3