Have you ever had a conflict or a problem with a boss or colleague? How was it resolved?

Yes, I have had conflicts in the past. Never major ones, but there have been disagreements that needed to be resolved. I’ve found that when conflict occurs, it helps to fully understand the other person’s perspective, so I take time to listen to their point of view, and then I seek to work out a collaborative solution.

have had conflicts，here have been disagreement这里为什么要用完成时，而不用过去时态？