21. It is essential that effective actions should be taken to end the situation.

22. It is no doubt that special attention must be paid to the problem of ______________.

23. But both ______________ and ______________ have disadvantages. For example, ______________. Which to choose, ______________ or ______________? Careful consideration is necessary before you make your own choice.

24. From what has been discussed above, we may reasonably arrive at the conclusion that ______________.

25. We must search for a quick action, because the present situation of ______________ is grievous, if allowed to proceed, will certainly lead to ______________.

26. No doubt, if we ignore the problem, there is every chance that ______________ will be put in danger.

27. We need to take a second look at the matter from a wider standpoint, otherwise, we won’t ______________.

28. It is high time that ______________. Here are some of the measures that might be taken immediately. 29. In conclusion, we should know about the problem of ______________, and object to ______________. Only in this way ______________.

30. Although it is affected by many factors, still there are certain ways that can make the situation better. The most import is ______________. Another way is ______________. Still another one is ______________.

31. Many solutions are offered here, all of them make some sense, but none is adequate enough. The problem should be studied in depth.

32. No easy method can be at hand to solve the problem of ______________. But the common recognition of the importance of ______________ might be the first step on the right way.

33. It is clear, therefore, that the task of ______________ demands great attention.

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 ______________.

41. From all the reasons above, we know that great changes had taken place in ______________. And I believe that ______________.