Two people near the window. On the evening study hall, a person to open the window, breathe fresh air. One to close the window for fear of catching a cold, this quarrel, unpleasant, ignore each other. Until one side of the cold need to take leave n days, the other side of the conscience y apologized, cold the unlucky egg back to class, the originator of the evil murderer bought cold medicine wriggling (the main can not pull the face, dead wrong, well, this characterization vivid ah) handed him, and then the two base friends and good. Well, that's about it. Two people two tables, take a frame as a window, the conditions are complete.