1.  It can make the air fresh.

2.  I thought it is pleasant o breathe the fresh air in the morning.

3.  When you go into it in early morning, you will feel the air is very fresh.

4.  When you breathe the fresh air look at the plants and do some sports in the morning, how happy is it !The "garden in the air" gives me much interest and tells me much knowledge about plants.

5.  When you go into in early morning, you will feel the air is very fresh.

6.  After some days later , you should go it over , as to it keeps fresh in your mind and you will remember it firmly .

7.  Most people usually tend to think that fresh water can never be used up, especially when they consider the fact that we can obtain fresh water from such resources as rainfall , river flowing and well water .

8.  However in fact , fresh water is in a critic shortage, nowadays.

9.  With the dramatically increasing of population and the amount of industry using water, more fresh water is used everyday.

10.  Hence something must be done to avoid the future disasters that the shortage of fresh water would bring to us.