When you finish answering a question in an interview, sum up how your skills or experience in that aspect would benefit the company. It helps you seem like a great fit and avoids the awkward pause between questions.
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You've probably experienced that pause at the end of an answer, where the recruiter isn't sure if you're done talking. Remember, the interview process is about a recruiter trying to figure out how your strengths will be good for the company or the job. So use that to finish every answer.
At the end of your answer, add a line that shows why your skills and what you just said would make you a good asset for the firm. You should try to do this even with irrelevant questions. The Daily Muse even suggests using the opportunity to ask a question of your own, and when you do that, make it a question that makes you look favourable.
3 Perfect Ways to Wrap Up Your Answers in an Interview [The Daily Muse]