语法填空：
阅读下面材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。
Many of us were raised with the saying “Waste not, want not.” None of us, however, can    (complete) avoid waste in our lives.
Any kind of waste is thoughtless. Whether we waste our potential talents, our own time, our limited  (nature) resource, our money,   other people’s time, each of us can become more aware and careful. The smallest good habits can make a big    (differ). It’s a good feeling to know in our hearts we are doing our best in a world      is in serious trouble. By being devoted to    (save) oil, water, paper, food, and clothing, we are playing   part in cutting down on waste.
We must keep reminding       (we)that it is easier to get into something than it is to get out of it. Actually, severe damage  (do) to our land is fairly recent in the history of our evolution. It’s time for us to say no to waste so that our grandchildren’s children    (be)able to develop well. We can’t solve all the problems of waste, but we can encourage mindfulness.