Come in , come in , what can I do for you ?   Professor Donald , are you giving your advanced geology course again next semester ?   Yes , I am applying on it .   I wonder if I could enroll in it . I know it is a graduate course and I ' m a junior , but ...   Aren't you a bit young ? I have a lot of qualified seniors to take the course and they usually have a hard time keeping up .   I know , but geology of the American west is my major interest and I have done a large reading in the field .   Well , if you think you are ready , I'll let you enroll .   Oh , thanks , professor Donald . This is really very nice of you . 