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生产者
使用者
coal
Pre-listening
Air pollution
has become a serious problem
As a result
None of us likes pollution!
/n?n/没有一个
leave rubbish here and there
/?r?b??/ 垃圾
Spit somewhere
/sp?t/ 吐痰
care for wild animals
/wa?ld/
We should do everything we can
to protect the environment
使用者
Word-guessing game!
吐痰
有用的事情
article
producer
user
结果
rubbish
spit
something useful
垃圾
as a result