When I was a student, a math teacher, always opening a class with a teacher, say jokes that will help students and study more effectively. and last year school exam results, grade I stand for on math scores. Why am I telling this story? because the topic I want to talk today is also about the fun but it is back in business. and here is my topicstand for in emulation
đang được dịch, vui lòng đợi..
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