Duolingo English Test sample questions are available online for free. DET sample practice questions reflect the same test design as the actual exam. As a result, anybody studying for the Duolingo English Exam should practice the sample questions before taking the real test. You must do so by following the steps outlined below: -- Go to your Duolingo English Test account and sign in. -- Sign in with your Google account by providing your registered email address, age, and password. -- You may practice mock sample questions after you've successfully joined your Duolingo English Test account. A full-length Duolingo English Exam practice exam may not be available for free. Even though the exam is shorter, it is still helpful to know the kind of questions asked on the original examination.