22. Mrs. Brown is supposed _____ for Italy last week. 

21. _____ several times, they need encouragement.  

（ ）53. Frank showed his ability of organization when he was still a very young boy. As a student, he wishes he could do something to improve the relationship between the teaching staff and the students. And, as a matter of fact, he has that ability.

36. In the writers opinion, many great men _____. 

（ ）13. Glasses help people to remedy their eyes.

29. Some students have difficulty _____ English, so they often ask their English teacher for help. 

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

（ ）52. As an excellent basketball player, Jonathan plays an active part in all of the school’s activities. He thinks sports can help people keep healthy and everybody should take part. He wishes to arrange some activities that everybody could join in.  

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.

（ ）15. Reading is the main factor accounting for the eyes diseases.

46. Meaning of stress: Stress is a feeling if you______ about something that you cannot solve.

25. —May I play the computer game tomorrow, Dad?—Certainly not, unless your homework _____ by then.