The solution is to become familiar with articles in the English language. Their correct use is not easy to grasp at first, but will come with time and practice. In addition to several threads posted here over the years (use the search box above - left) here is a link to a site that offers a pretty good explanation of articles (and a pop quiz, if you wish).
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.