66.Now colleges and universities are seeing a change in students’ lifestyle. More and more college students prefer to stay in the dormitory in their leisure time and become indoorsmen or indoorswomen. The Internet offers students many options to kill the spare time. Various on-campus services, from food delivery to laundry services, are fueling the culture of staying in dormitories. Some students argue that outdoor sports or social activities are no better than staying in the dormitory and playing on a computer. Irregular life and lack of physical exercise have become the health enemy of college students.

21. _____ several times, they need encouragement.  

48. (2) Bad stress: Stress can last long if you are___ to deal with your problems. It can actually let you do worse in your daily life.

28. While cleaning the snow on the road, _____.

5.

23. Not until the game had begun _____ at the sports ground. 

3.

42. Which of the following is NOT true according to the passage?

27. How much _____ she looked without her glasses!

（ ）13. His secretary stays in the office helping her boss to deal with some daily routine.

8.

Why did David quit his job?