大单小单大双小双公式简介：I thought I might have a cold. Su Can rubbed the end of his sore nose, wiped away the snot, wrapped the tissue into a crumpled ball, and threw it into the trash can in the hallway.
I thought I might have a cold. Su Can rubbed the end of his sore nose, wiped away the snot, wrapped the tissue into a crumpled ball, and threw it into the trash can in the hallway.
