Clean Air, Fresh Air 清新空气

Dean

Sniff the air. How does it smell? Fresh? Crisp, clean air is something that everybody would like to breathe in. Breathing clean air helps us stay healthy. Unfortunately for most, this is hard to come by. Air pollution has become a very big problem for all of us. What can we do to alleviate or stop pollutionso that we can get clean fresh air?
There are several very si mple things that we can do to ease the air pollution. We can go to work by bike or on foot instead of by car if our working places are not far.We can also use energy-saving lights.If you are a heavy smoker, please smoke less or give up smoking. It is not only good for the air it is also good for your health. Plant more trees and flowers because they can absorb carbon dioxide, a greenhouse gas, from the air and make it clean. I hope everyone should do his bit to help make the planet a better place!

大地10

I can see you are putting a lot of effort into your work. This one was a masterpiece! Global Warming is something we should keep a close eye on. I share the same visions of making a better a future for our planet.
discuss: I hope everyone should do their bit to make the planet a better place.

Dean

不定代词 anybody，everybody，nobody，anyone， someone， everyone，no one， 及whoever和person在正式场合使用时，可用he, his, him代替。

Nobody came, did he?　谁也没来，是吗?

Dean

Yesterday was the 22nd \"World No Tobacco Day\". This year's campaign is focusing on cutting down smoking by making the public more aware of associated risks.

Since the 1950s, smoking has become known to as the main cause of lung cancer.

In order to improve people's awareness of harm of tobacco, World Health Organization has began \"World No Tobacco Day\" since 1989.