第三节：完形填空（共20小题，每小题1.5分，满分30分）
I teach economics at UNLV three times per week, Last Monday ,at the beginning of class, I 31asked my students how their weekend had been, One young man said that his weekend had not been so good, He had his wisdom teeth 32he young man them proceeded to ask me why I 33seemed to be so cheerful
