1. According to a recent survey，four million people die each year from diseases linked to smoking.
2. The latest surveys show that quite a few children have unpleasant associations with homework.
3. No invention has received more praise abuse than Internet.
4. People seem to fail to take into acthe fact that education does not end with graduation.
5. An increasing number of people are beginning to realize that education is not complete with graduation.
6. When it comes to education，the majority of people believe that education is a lifetime study.
7. Many experts point out that physical exercise contributes directly to a person's physical fitness.
8. Proper measures must be taken to limit the number of foreign tourists the great efforts should be made to protect local environment history from the harmful effects of international tourism.
9. An increasing number of experts believe that migrants will exert positive effects on construction of city. However，this opinion is now being questioned by more more city residents，who complain that the migrants have brought many serious problems like crime prostitution.
10. Many city residents complain that it is so few buses in their city that they have to spend much more time waiting for a bus，which is usually crowded with a large number of passengers.
11. There is no denying the fact that air pollution is an extremely serious problem：the city authorities should take strong measures to deal with it.
12. An investigation shows that female workers tend to have a favorable attitude toward retirement.
13. A proper part-time job does not occupy students' too much time. In fact，it is unhealthy for them to spend all of time on their study. As an old saying goes：All work no play makes Jack a dull boy.
14. Any government，which is blind to this point，may pay a heavy price.
15.Nowadays，many students always go into raptures at the mere mention of the coming life of high school or college they will begin. Unfortunately，for most young people，it is not pleasant experience on their first day on campus.