根据短文意思及首字母提示补全单词。

     We all need a healthy environment, but we produce waste every day and

it d______1 harm to our environment. Though we are young, we can still do

something to help. In f_______2, even the simplest everyday activities can

make a real d_____________3 to the environment. Here are some ideas for

you. Remember these three words: reduce, reuse and recycle.

     Reduce means "use l_____4". Don't waste things. This saves money and

reduces p__________5 and waste going into the environment.

     Reuse means "use again". Use things for as l________6 as possible. When

we buy things, make sure that they last a long time. And we should repair them

if we can i____________7 of throwing them away and buying news ones.

     Recycle means "change things i________8 something else." Although it

takes e__________9 to change something into something else, it's b______10

than throwing things away or burning them.