Have you taken classes/workshops to expand your education and skills that will help as an interpreter?

A good interpreter will always work to better their skills. Hiring managers would like to know that you are never dormant in your education but that you are always striving to be better.

You could answer like this: "I continually take classes to expand my skills. This past summer I have expanded my skills in the Mandarin language. I plan to take additional workshops this coming year."