根據短文內容及首字母提示補全單詞.

題目：

根據短文內容及首字母提示補全單詞.
It's our d____ to protect our enviroment.No matter w____ we live,we can do s____ to keep our neighborhood clean and tidy.We can c____ waste things for r____.We should p____ more trees.We mustn't s____ in the street.We mustn't pick the flowers or s____ on the grass in public places.If e____ makes a contribution to protect the environment,the world will become m____ more beautiful.And our life will be better and better.

解答：

It's our duty____ to protect our enviroment.No matter where____ we live,we can do something____ to keep our neighborhood clean and tidy.We can collect____ waste things for reuse____.We should plant____ more trees.We mustn't spit____ in the street.We mustn't pick the flowers or step____ on the grass in public places.If everyone____ makes a contribution to protect the environment,the world will become much____ more beautiful.And our life will be better and better.