4个数字复式2中2出2个中多少组简介：Su Can sat down in his original seat to read. After waiting for ten minutes, the sun rose outside, the sky was completely bright, and almost all the students in the class had arrived.
Su Can sat down in his original seat to read. After waiting for ten minutes, the sun rose outside, the sky was completely bright, and almost all the students in the class had arrived.
