三中三20个数有多少组

简介：Facts have proved that even if Su Can did it randomly, the accuracy rate of the question was much higher than that of Li Yun. What's more, Liu Lei copied several and corrected one. The bright red crosses on the homework book were so dazzling that it was very depressing. , and what’s even more depressing is that the handwriting also promised Li Yun a lot of snacks.