根据短文内容和以下提示：1）首字母提示，2）语境提示，3）汉语提示，在每一个空格内填上一个适当的英语单词。所填单词要求意义正确，拼写准确。
These days our government is aiming to build an "economized(节省) society".  (作为) students, you can do something that you can.
First, save things. You'd better walk to school or    a bike instead of taking a car. Turn off the  as soon as you leave the classroom. Remember to turn off the tap right after washing your hands. When you go out to eat in a     (餐馆), ask for smaller dishes and take leftovers（剩菜）h_    _.Before you buy something new, think        it is necessary or not.
Second, use things for as long as p_   __.When you buy things, make sure that they can _  _ a long time. Don't use a paper cup or a paper bag. It's better to use a china cup because you can use it again.
Finally, collect what can be _____（回收利用) in your classroom, such as waste paper and soft drink cans. It can save money and protect the environment.
In general, I think one thing we should keep in mind is that __ matter what a small effort we make, it will make a difference.