The environmental pollution, especially the air pollution, is becoming more and more seriously today. On the road people drove slowly because they could not see clearly. People also suffered from many illnesses caused by smog.
This kind of air pollutant comes from a variety of natural and manmade sources. The one of the main cause of the haze is _____（原因）. But how do we deal with it?
In my opinion, one of the effective solutions to help remove haze is to _____（措施一）. Moreover,we should _____（措施二）. We must _____（措施三）. Only in these ways can we expect to have more sunny days.
It is reported that the rate of myopia of Chinese students is ranked as the highest in the world.
The increase of myopia rate is mainly related to some bad habits of using eyes. For example, _____（详细说明）. In addition, many students _____（详细说明）。
Realizing the reasons of this result, it’s time for us to take measures to protect eyesight. First, _____（方法一）. Second, pay attention to the following: don't_____（做什么）; don't_____（做什么）. Third,_____ （怎么做）will also help you keep good eyesight. If you obey the rules above, I think, you may prevent your eyesight from becoming short-sighted.
Recently, the problem of ____ has aroused people’s concern.
____have been the hot issue of discussion for a long time.
____ is a serious problem in today’s world.
____ has been playing an increasingly important role in our day-to-day life. It has brought us a lot of benefits but has created some serious problems as well.
Nowadays, ____has become a problem we have to face.
Nowadays, ____ are becoming more and more popular among the middle school students.
Today,____, which have brought a lot of harms in our daily life.
What makes things worse is that ____.
Man is now facing a big problem of ____ which is becoming more and more serious.
Withthe development of the internet, more and more people are inclined to ____.
Among the various reasons contributing to this problem, ____ plays an important part.
We should take good care of the ____ instead of ____ so as to improve our living conditions.
Thus more effective measures should be taken immediately to protect ____.
In my opinion, the best solution to this problem is to ____.
We should take some effective measures to fight against ____.
Since ____ is a serious problem, measures must be taken to control it.
Laws and regulations should be passed to ____.
Faced with ____, we should take a series of effective measures to solve it.
It is high time that we put an end to the ____.
It is time to take the advice of ____ and to put special emphasis on the improvement of ____.
I think ____ is necessary to solve the problem.