The interviewer wants to hear that you enjoy being a part of a team and that you contribute to the success of the team. Start off by sharing the last time you contributed to a team effort. Perhaps it was a large project at work. Maybe it was on a basketball team. Or, you might have led a Girl Scout troop. All of these make great examples! Discuss how you personally made efforts to contribute to the team, and be sure to mention how successful the team was!