21. There is an old saying, ______________. It’s the experience of our forefathers, however, it is correct in many cases ever today.

22. The English proverb says, ______________. This is quite true because ______________.

23. ______________ is now______________, and at the same time ______________. These two factors have caused ______________. Then what shall we do to solve ______________ in the face of such a situation.

24. One of our ancient philosophers said, ______________. Chinese people have always been holding this idea to be one of their standards of morality.

25. One of the great early writers said that ______________. If this is true, the present situation should make us ponder over ______________.

26. “Why do ______________?” Many people often ask questions like this.

27. In recent years, there is a general tendency to ______________. According to a study, there is______________. compared with ______________ last year. Why ______________?

28. According to a survey, there is a growing number of ______________. What brings this result? The main reason rests with.

29. Some people prefer to ______________. In their opinion, ______________. In addition,
______________. Nevertheless, nowadays, ______________ has become more and more common.

30. Today, there ______________, which have brought a lot of harms in our daily life. First,
______________ second, ______________. What makes things worse is that ______________.

31. Nowadays, ______________ has become a problem we have to face. Though it’s easier said than done, with the help of modern technology, we now have many means to solve it.

32. Many people are inclined to ______________. In their opinion, ______________. They believe that______________.

33. From the graph/chart, we know the statistics of ______________ and ______________. It can be seen easily that ______________.

34. We may have a long way to go before we reach the final goal. But once we are on the way, the chance to reach it is greater.

35. But for me, I would rather think of the matter in an optimistic way. Because I believe ______________. 36. We all know the story of ______________. this lesson tells us that ______________, we should______________.

37. My own point of view is that ______________ is a normal behavior in our society. There is no doubt that ______________. As an old saying goes, ______________.

38. If we can’t take useful means, we may not control this trend, and some undesirable result may come out unexpectedly, so what we should do is ______________.

39. However, this graph may not predict the entire situation in the future. I believe ______________.

40. From the graph it is evident that ______________.