These things should that many students lack the sense of environmental awareness. It’s important to educate students to be more environmentally friendly. At the same time，students can do small things，such as collecting used items for recycling turning off the lights，saving water. Always remember that it’s everyone’s responsibility to protect the environment.

14.
The Green School Project has become part of the environmental education in our school. However, there are still a lot of problem in the school.
Very often you come across an empty classroom with the lights still on. It’s not difficult to find evidence of wasting water，a very serious problem. Additionally，students do not recycle enough，throwing away the soft drink bottles，used exercise papers and books. Worse still，many students still use the non-environmentally friendly lunch boxes，causing the “White Pollution”.
These things should that many students lack the sense of environmental awareness. It’s important to educate students to be more environmentally friendly. At the same time，students can do small things，such as collecting used items for recycling turning off the lights，saving water. Always remember that it’s everyone’s responsibility to protect the environment.

15.
If you want to keep healthy, please take my following advice.
It's important for us to be careful about diseases all the time. If you pick up a disease, see a doctor immediately and make sure you don't carry the disease everywhere.
In our daily life, don't drink water that is not boiled, for it is very easy to cause a disease from water that is not clean.
When you are out, don't eat food that has been kept outside for a long time. You'd better also make sure that the bowls and spoons, etc. have been washed in a proper way.

16.
Dear headmaster ,
I’m writing to tell you about a discussion we’ve had about whether students of Senior 3 should take physical exercise . 60% of the students think they should take exercise every day , such as doing morning exercises , playing ping-pong ball and playing basketball , but it shouldn’t take up too much time . Exercise builds one’s body and reduces diseases . Sports let their brains have a rest so that their revision will be more effective .
On the other hand , 30% believe taking exercise is a waste of time and tiring . After having sports , they are much too excited for a long time to pay attention to their lessons . It’s also possible to be hurt in sports .
Yours sincerely
Ma Xin

17.
It will be the last day of mid-term tomorrow, and I hope all of you will try your best to do well in the last exam—English. After that, the Students’ Union is going to organize a mountain-climbing activity. Please wear sports shoes and take some food and water with you. In the course of the mountain-climbing, please help each other and pay special attention to your safety. Please don’t leave your class without permission. On the top of the mountain, each class is going to have a picture taken. After going downhill, you can either walk home or take a bus. From Joozone.com.joozone.com