This is a good question to highlight your achievements. Don't be smug or arrogant about the success of a project, especially if it was a team effort. You need to give credit to the team, too. You could say what you contributed to the total project and also give credit to others that helped in your success. Don't be overly modest, either.Here are some pointers:

1. Pick something that was clearly a success and highlight your skills.

2. Pick something recent. If you pick something twenty years ago, they are going to wonder what you have done lately.

3. Pick something important. You may have succeeded in many projects that are not that significant. 

4. Pick something easy to explain. If complicated, give the short version.

5. Be sure to explain what you learned from this success.

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Yes, it is possible to do that, such as when you want to create a background behavior for a particular activity. You can do this by using add(Fragment,string) method to add a fragment from the activity.

If you have hired one or more people during your career, your answer might go something like this:

     " Yes, I have hired people.I have also decided whether some internal applicants were right for jobs in my department. The first time I hired someone ,I concentrated on checking off all the right qualificatios.I just went down a checklist.

        Since then,though, I've learned that some candidates who became excellent workers didn't necessarily have every qualification on that checklist.They more than make up for what they lacked in the beginning with enthusiasm and a willingness to work with others".

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If you've never hired anyone? Show the interviewer you appreciate that he or she is trying to evaluate both your management potential and people skills,and try something like this:

     "Not realy,but on several occasions I was asked to speak to prospective applicants and offer my opinion. Ofcourse , in those cases, I was trying to determine whether that person would be a team player and if he or she would get along with the other people in the department."