The following is a fragment of a classmate's composition. After careful reading, please select 4-6 places (no more than 6 places) and modify them with the specified symbols. (4 points)

When I was cleaning yesterday, I accidentally walked off the stage and sprained my foot, so I couldn't go to school. Li Hua came to my home to make up lessons for me. As soon as you come in, you say, "You sprained your ankle. My classmates are very concerned and let me visit you. " I said, "I only hurt my tendons, not my bones." Why do you have to fan the flames? " Then, Li Hua gave me Chinese, math, English and other classes. His explanation is simple and easy to understand. I said excitedly, "Thank you." "You're welcome. Aren't we good friends? " Li Hua left, watching his distant back, I was immersed in the warmth of the group.

There are too many. The simplest and most effective way is to take out the Chinese math unit test questions or corrected books you have done, and just explain all the questions you don't understand. You see, those exams are typical questions. . . . . This question is too broad to grasp.