根据短文内容选择方框内的单词，并用其正确的形式填入空白处，使补全后的短文意思通顺，语法正确，结构完整。

I think it is easy to live a low carbon life if you want to make our life better. Here are some _________ of advice: Travel by bus, bike or on foot as much as possible and ask our parents to drive as little as possible.
Plant trees as many as you can. Trees can help to make the air cooler in summer. _______ the lights if it isn’t necessary to keep them on.
Don’t waste the water, oil, ________ etc. Of course, there are many ________ things we can do in our daily life. After all, the earth is our common home. If everyone _________ small changes, we can make a difference.