It's no surprise that this one pops up often for personal interview questions with answers for freshers. Filling in for someone or substituting reflects your willingness to take up tasks different from your niche. It can portray several talents you have or could align you with learning something new. It shows how you can take responsibility and the amount of effort you show to accomplish it. Example: “Once during my internship with a start-up, an important colleague of mine met with an accident in the lumbar region. He couldn’t get up, walk or even sit without someone’s assistance. He would work remotely and guide us through, but things were tough without his physical presence. He had a hold over us and knew when to help us. During that time, I used to visit him probably once every 10 days. I would interact with him in person and understand his ideologies and modus operandi better. A few weeks down the line, he told me to fill in for him at the office since it would take him another six months for a full recovery. At first, I was hesitant as I wasn’t quite sure how I'd fill in his shoes. But he persisted until I finally caved in. I remember it being tough initially but slowly the experience came with the job. I got good, better until one day, they projected me in the vertical.”