Answer:
They can talk in more than one language.
Step-by-step explanation:
To be more specific, having the ability to speak in more than one language allows you to express more in your words, understand more of the culture from the language that you speak, and assist/converse with others on a day to day basis. There are also associated things like being able to watch television in its original language, or listen to a song and know what it says without looking up the lyrics. There are plenty of things bilingual people are able to do ! Just think about it creatively. What aren't you able to do, that if you knew another language, you could do ?