Confused~~~ Hi! I wanted to send a postcard to my friend in Korea and I wanted to say "You already promised me that you will come to Shanghai!" Is it grammatically correct to write it like this: "니가 상하이에 올 이미 약속했잖아"? I'm kind of confused about how to phrase the clause "to come to Shanghai". Can I just add -을 at the end of the verb 온다? Thanks in advance for any help!