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What makes our city dirty?
What can we do to keep our
city clean?
要求：细读课文，选择并 贴上合适的图文。
They help keep the air clean.
？
？
stick(粘贴)
stick(粘贴)
1.
3.
2.
4.
5.
carpool to school
plant more trees
take the bus and the metro to school
put rubbish in the bin
move some factories away from our city
walk to school
They help keep the air clean.
take the bus and the metro to school.
move some factories away from our city.
put rubbish in the bin.
plant more trees.
walk to school.
Tips: 图片可以帮助理解哦！
What do you think of their ideas?