九个数复式三中二是多少组

简介：Xiao Xiaobai, who was a little dumbfounded, lowered his head with a smile on his face and just opened the book. Then he heard Sun Yuanyuan's cold, sweet voice with hint of anger coming into his ears: Xiao Xiaobai, I didn't do it just now. Say you are? Get out of here and stand there. You won't be allowed in until the self-study is over.