Hehe, you are the only one who knows how to harvest this thing best. I think you chose tennis as an elective course because you like it, right? At present, tennis is really sought after by more and more young people. You may come in handy when you practice your skills in college, and you may join the society when you leave school. Not to mention sports, you can also know many good partners through the exchange of skills. It is not excluded that there may be your noble people among these good partners. As far as personal thanks are concerned, I suggest you write about the skills you have learned, the friends you have made, the tennis matches you participated in and the knowledge you have gained. As for comments and suggestions, if your teacher seldom organizes other tennis-related activities after class, you can suggest him to organize more tennis competitions in the future to increase the opportunities for everyone to exchange skills. If you feel that the class hours arranged by the school are not enough, you can suggest that the school extend the class hours. If the space is not enough, schools can be advised to control the number of classes and increase the number of classes. If the school exercises after class, the tennis court is charged. You can suggest that schools provide students with more favorable fees, or suggest that schools adopt exercise cards with acceptable prices during the school year, so that students with exercise cards can play unlimited games on the tennis court in their spare time, and so on ... In fact, many things can be written. The original intention of the teacher to raise this topic should be to get some feedback from you, so as to improve his teaching and management level in the future. 300 words shouldn't be difficult for you, should it? We all want at least 30 thousand words in our graduation thesis, please. . Depressed! ! ! ! Try to write, I believe you are fully qualified, and you will get something after writing! Let's work together. ...