快三数学计算方法简介：The students in the classroom were basically all here, and even Cheng Keshu came early. What made Su Can a little uneasy was that Liu Lei never came to class. His seat was empty, and Li Yun was sitting next to him, which was very awkward.
The students in the classroom were basically all here, and even Cheng Keshu came early. What made Su Can a little uneasy was that Liu Lei never came to class. His seat was empty, and Li Yun was sitting next to him, which was very awkward.
