Suppose the job description says Merck seeks an energetic student with strong communication, interpersonal, and leadership skills to work in an intern position. In that case, describe your greatest strength as either your energy or your communication, interpersonal, or leadership skills. Focus on using a keyword in the job description so the interviewer can see that you have one of the qualities they are looking for in their ideal candidate.

"My greatest strength is my leadership skills. I developed these skills in high school as the class president and team captain of my volleyball team. I have further developed these skills in college as the debate team captain. I was elected to these positions for my ability to lead a group of people to accomplish and achieve the same goals. I enjoy leading others by example, and I look forward to bringing these skills to your company if I am chosen for the internship."