The ___1____, two-hour lecture only __2_____ the students. They respected the guest speaker's experience, but every time she __3_____ from the complex topic, she added ten ___4____ minutes to the harangue. The speech was the __5_____ of the brief overview that had been promised. The conditions of the auditorium were not ____6___ for long lectures; the air conditioner was broken, and the heat and poor lighting forced many of the students to fight drowsiness. One young man nodded off and woke with a start when his head struck the desk; he quickly sat up straight with a look of ___7_____. The speaker ___8_____ at him for a few seconds, but never stopped speaking.
