Would you like to see a moviw with me tomorrow?Well ,I won't go out with you ,___I finish my work

Would you like to see a movie with me tomorrow?
Well,I won't go out with you,(unless) I finish my work.
虽然语法上这个空填
unless 或 until 都可以.
但按语境填 unless 比较符合逻辑.
unless 的意思是 “除非”
回答 除非 (unless ) 我做完了作业,我（明天）不要（不想）去.
是最佳选择.
如果回答 until ,这意味着只要你作业做完了,随时可以去（未必是明天）.这不是对问题最好的回答.