In the second class of evening self-study, the class was very noisy, the teacher in the class had already returned to the office, I don't know when I would come, even if I came, I wouldn't stay long, and I left after counting the number of people.

If there are questions, students take the initiative to go to the office to ask, after all, learning is personal, and they want to answer questions...

Chapter 60 of "Blue into the Sky" is polite is in the middle of the hand, please wait a moment,

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