The class teacher suddenly sends a message, how to deal with it?

You can ask the teacher the reason for sending the message first, and then make a reasonable response. If you haven't finished your homework, you can explain why you haven't finished it, and then ask the teacher for advice. If it is because of poor academic performance, you should make it clear to the teacher that you will work hard and strive for progress next time. I think you should ask the teacher the reason for sending the message first. If the homework is not well written, then you should explain the reason to the teacher. If your academic performance is not satisfactory, you should make it clear to the teacher, study hard next time and strive for progress next time. I think at this time, you should first ask your class teacher the reason for sending the message. Then give the answer. I think if you haven't finished your homework, you can explain the reason to the teacher. If you don't get good grades, you can tell the teacher that you will work hard next time.