1.  Through the sports, we can improve the quality of our body.

2.  But pressure can make the students be dilligent and, as a result, improve the quality of our aducation .

3.  In recent years, most developing countries plan to improve the quality of population: give good birth and let the children be well educated.

4.  Thirdly, we should improve the qualities of commodities and low the price.

5.  Gradually, we can read much faster and without missing anything, extensively can save a lot of time and trouble in reading and improve the quality of our reading.

6.  So people should improve their quality instead of putting all faults on TV.

7.  Controlling environmental pollution and maintaining the balance of ecology call for improving humanity's quality.