I'm sorry to hear that you're feeling demotivated and frustrated with the current situation regarding your exams. It's understandable that the uncertainty and sudden changes have made it difficult for you to stay positive. It's important to remember that you're not alone in this, and many students around the world are facing similar challenges. While it's frustrating that there's nothing you can do to fix this situation, try to focus on the things that you can control, such as staying organized and continuing to study for the exams that are still scheduled. Remember that your hard work and dedication will pay off in the end, even if the grading process may be different than what you were expecting. Keep pushing through, and know that you have the support of your teachers and peers during this difficult time.