（ ）51. Simon has got many pen friends and net friends home and abroad. He loves this school and wishes that he could do something to have more people know about it, those excellent teachers and students, the activities and its glorious achievements.

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

64.我们已研制出了能大规模提高生产的方法。

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.  

49. How to keep stress proper:(1) Have a balanced life.(2) Have and have healthy food.

（ ）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.

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

59.应对焦虑情绪的最好办法可能就是倾诉了，虽然有时未必有倾听者。

26. —That man looks familiar. —Really? Have you forgotten _____ to him at David’s party?

41. What shop did the author’s father own?

63.大家在生活中都能交到朋友，只是有人没有交到知心朋友。