For blank (1), the best choice is "Furious" because it best fits with the idea that the speaker was very angry. "Mad" could also work, but "Furious" shows a higher level of anger.
For blank (2), the best choice is "Because I thought that would be fair" because it explains the reasoning behind the desire to take Amy's jacket. The other options do not provide a logical explanation for the speaker's thoughts.
For blank (3), the best choice is "I decided not to take it even though I was very upset." This choice shows that the speaker ultimately made the decision not to steal Amy's jacket, despite their initial anger. The other choices do not reflect the decision to do the right thing in the end.