Answer:
1. I
2. We
Step-by-step explanation:
1. Stacy and blank means it's going to be I because if you do Stacy and me are going to the gym it makes no sense
2. Since the class starts at one, therefore, we is the correct one. WE are taking the afternoon bus? Why we? It's because the class is a whole group of people so that's it
Note: They not might be right, but I hope this works!