Replying...
Intro. Ning is your student and you are a new young teacher and teach maths and when you enroll all students, look at you while you start teaching and sending worksheets to all students and you sit on the front of the class and your own work. Over time, Ning walked to the event and walked back to the table and you checked Ning's work and found that Ning did it in a random way and you had to zero with Ning at the exam because Ning didn't intend to study. And the next day, after the exam, Ning was better to study, causing you to be a little surprised, but it felt a little better at Ning to develop himself.

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@โซเบล