1. The most obvious reason for this phenomenon is that ______________. Consequently, ______________.
        2. No matter you like it or not, AAA has become more and more popular and there are many reason for it.
        3. It’s an urgent task for us to change this unfavorable situation: ______________.
        4. The picture can reminds you of some strange, yet familiar phenomena existing in our society.
        5. A great number of solutions are being offered. Some people suggest that ______________. Others argue that ______________.
        6. Confronted with AAA, we should take a serious of effective measures to cope with the situation.
        7. However, ______________ may cause some problems. First, it is ______________. Second, ______________. Finally, ______________. So, it is clear that ______________ has its advantages and disadvantages.
        8. Although ______________ has a great advantage of ______________, it can’t compete with ______________ in ______________.
        9. ______________ may be preferable to ______________, but ______________ suffers from the disadvantages that ______________.
        10. The advantages of ______________ are much greater that those of ______________. For instance, ______________.
        11. ______________ may be preferable to ______________, but it also suffers from the disadvantages that ______________.
        12. But I don’t think it is a very good way to solve ______________. For instance, ______________. Worst of all, ______________.
        13. There are many ways to ______________. First, ______________. Second, ______________. Third, ______________.
        14. On the contrary, there are some people in favor of ______________. They believe ______________. Moreover, they think ______________.
        15. There are several measures for us to adopt. First, we can ______________, there are a number of advantages of ______________. Another solution is to ______________.
        16. It is high time that something was done about it. For example, ______________. In addition, ______________. All these measures will certainly ______________.
        17. There are some other people, who ______________. Their reasons are different, something for ______________, sometimes for ______________, and sometimes simply for ______________.
        18. ______________ is necessary and important to our country’s development and construction. First, ______________. What’s more, ______________. Most important of all, ______________.
        19. However, if not managed properly, ______________ can create many problems. Sometimes ______________. Furthermore, ______________. Therefore, ______________ has been gaining public concern.
        20. There are probably many reasons for ______________. First, ______________. Second, ______________. Finally, ______________.
        21. Well, why is there ______________? I think there might be two reasons. One is ______________, and the other is ______________.
        22. There are, I think, two main reasons for ______________. In the first place, ______________. In the second place, ______________. Therefore, ______________.
        23. Why ______________? For one thing, ______________. For another, ______________. Perhaps the main reason is ______________.