το σωστο ειναι Προκειτε να γινω. "going to be" μεταφραζεται καλυτερα ετσι στην περιπτωση
Dear Team of Duolingo. This phrase doesn't mean something to Greek language. You have to change this "meanless" phrase (which confuse everyone of your users) with the right phrase "I am going to become a mayor" or something else. Thank you for your time and we hope that you receive our comments and make these changes that are necessary.