The Earth was{#blank#}1{#/blank#}and{#blank#}2{#/blank#}in the past，but now some parts are{#blank#}3{#/blank#}．We should stop throwing{#blank#}4{#/blank#}into rivers．We should stop cutting{#blank#}5{#/blank#}so many trees and using{#blank#}6{#/blank#}bags．

 {#blank#}1{#/blank#}Nice to meet you.

 {#blank#}2{#/blank#}Hello, Li Mei.

 {#blank#}3{#/blank#}She's my friend.

 {#blank#}4{#/blank#}Nice to meet you, too.

 {#blank#}5{#/blank#}Hi, Fang Fang.

 {#blank#}6{#/blank#}Li Mei, this is Fang Fang.