20个数字4个一组有多少组简介：When Cheng Keshu finished reciting the last paragraph, the classroom burst into even more enthusiastic applause. Even people passing by in the corridor outside could hear the deafening sound.
When Cheng Keshu finished reciting the last paragraph, the classroom burst into even more enthusiastic applause. Even people passing by in the corridor outside could hear the deafening sound.
