✔ 最佳答案
there are 2 ways to say them as Korean are very keen on being respectful and polite to the elderly/important people/people you hv met for the 1st time.
你好嗎 : Annyong (for friends), Annyong-ha-sei-yo (for elderly/important people etc)
謝謝: Ku-ma-woa (for friends), Kum-sa-ha-mi-da (for elderly/important people etc.)
再見: Annyong (for friends) this time u hv to raise the "yong" bit, so that they can distiguish between 再見 & 你好嗎. Annyong-he-ka-sei-yo (to say this to people who are gonna stay, for example, if u pay a visit to ur friends, then u will say this when u leave.)