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 【小题1】 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. 【小题2】 the lights if it isn’t necessary to keep them on.
Don’t waste the water, oil, 【小题3】 etc. Of course, there are many 【小题4】 things we can do in our daily life. After all, the earth is our mon home. If everyone 【小题5】 small changes, we can make a difference.piece
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(答案→)piece
解析：
【小题1】结合介词of可知此时适合填一个量词，故填piece，条。
【小题2】结合下文the lights 灯，可知适合单词为turn off 关掉
【小题3】结合前文并列宾语，水，燃油可知此处同样为一个名词，故填gas，天然气。
【小题4】things为名词东西，前面缺少定语，故填other其它的。
【小题5】结合上下文可知从句中缺少谓语动词，故填drive，驱动。