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... teacher in the senior high school department, but because the math teacher in Si Hua's class had some family issues and took a year off, Mr. He, who had limited experience at the time, taught the senior high school department while also filling in for the math teacher in Si Hua's class.
Later, the original math teacher in Si Hua's class returned, but Si Hua's class had already become accustomed to Mr. He's teaching style. Moreover, under Mr. He's guidance, the math scores in Si Hua's cl ...
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