【答案解析】I have two methods to get better grades. First, I usually have a prepared objective and focus for my study even before class begins. Therefore, I am able to concentrate in class and catch the important points during the professor's lecture. After all, extensive preparation gives me a better understanding of the subject. Also, I am always fully involved in all kinds of group studies. So I express my opinions briefly in the tutorial, have a discussion with my classmates (because other people's ideas sometimes can be inspiring), appreciate the learning process, and become fully engrossed in what the teacher has said.