2. There are many ways to ______________. First, ______________. Second,______________. Third, ______________.

　　3. On the contrary, there are some people in favor of ______________. They believe ______________. Moreover, they think ______________.

　　4. There are several measures for us to adopt. First, we can ______________, there are a number of advantages of __________. Another solution is to ________.

　　5. It is high time that something was done about it. For example, ____________. In addition, ______________. All these measures will certainly ______________.

　　6. There are some other people, who ______________. Their reasons are different, something for ______________, sometimes for ______________, and sometimes simply for ______________.

　　7. ______________ is necessary and important to our country’s development and construction. First, ______________. What’s more, ______________. Most important of all, ______________.

　　8. However, if not managed properly, ______________ can create many problems. Sometimes ______________. Furthermore, ______________. Therefore, ______________ has been gaining public concern.

　　9. 有很多原因____，

　　①There are probably many reasons for ______________. First,______________.Second, ______________. Finally, ______________.

　　②There are, I think, two main reasons for ______________. In the first place, ______________. In the second place, ______________. Therefore, ______________.

　　③Well, why is there ______________? I think there might be two reasons. One is ______________, and the other is ______________.

　　④Why ______________? For one thing, ______________. For another,______________. Perhaps the main reason is ______________.

　　⑤Why ______________? The first reason is that ______________. The second reason is ______________. The third is ______________. For all this, the main cause of ______________ is due to ______________.