A fair response to this question would be, "I did my best to work well with everyone and I always put in 100%. I was consistent, dependable and driven." If you did something phenomenal, share it. Just be aware that you only want to share the facts that can be confirmed by anyone on your team your future boss could be in communication with. Highlight your accomplishments and your work ethic. Show off your consistencies and your best traits that were apparent to your previous boss.