In the following dialogue between two classmates who have just come out of the exam room, there are numerous punctuation errors. Find and correct any fourteen of the errors. Ruba: Hello Riya, How was your exam! Riya: Not so good? I couldn't answer everything. Ruba: Why? The exam was easy! wasn't it. Riya: Most questions were uncommon; weren't they. Ruba: Uncommon alright. But they were not difficult? You just needed to be a little creative to answer them. Riya: You're a good student, So, everything is easy for you? Ruba: That's not true? You too are a good student: Our teachers praise you, don't they. Riya: Well, maybe I didn't work hard enough this time? I should have been more serious. Ruba: That's not a problem, Prepare for the next exam.