I am the monitor of a high school class. Our class is going to participate in a chorus competition. How can we better mobilize the enthusiasm of my classmates?

You can take some time to talk to your classmates after class, and say that this matter will have an impact on the honor of the class, so that everyone can actively participate, or you can talk to the classmates next to you after class. If you support If you say it, ask them to tell other students, maybe this can create a chain reaction. If they don't support you, tell them to the good ones and let them publicize it, or find a publicity committee member. If that doesn't work, just ask them. Be the head teacher.