完形填空（共10小题；每小题1分，满分10分）
I was walking in the street when a piece of beautiful music came to my ears. I saw some-one     some rubbish and walk to a truck which was collecting rubbish     . As soon as the people nearby hear the music,  they       go out with their rubbish and throw it in,  It' s a         way to help keep our city clean. Protecting our environment is very important.        you live, you can do something useful in or around your neighborhood       ,  we have done something to improve the environment. For example,  we have collected      paper or bottles for recycling and we have planted        trees or flowers in or near our neighborhood. If       makes a contribution to protecting the environment,  the world will become much more      .

A．picking up B．pick up C．throwing D．throw

A．outside B． inside C．downstairs D． upstairs

A．sometimes B．really C．slowly D．usually

A．unusual B．important C．pleasant D．common

A．Where B．Wherever C．When D．Whenever

A．In that way B．Since then C．In fact D．At last

A．small B．waste C．old D．dirty

A．better B．fewer C．greener D．more

A．everybody B．somebody C．nobody D．anybody

A．useful B．enjoyable C．hopeful D．beautiful