7码复式三中三有多少组合

简介：The old man Dou Da cannot read and is illiterate, but his other little grandson is this half-year-old boy named Li Shaou. He is in the first grade of junior high school. Although he is not very knowledgeable, he can understand basic Chinese characters. It was all done, so the old man brought paper and pen. While he was reading, Li Shaou squatted on the old table to write.