小学2年级 - 杂文 阅读指导

　　　　　　　　　　Keep our city clean
We have a big and nice city .But it is so messy and dirty .To keep our city clean , we can take the bus and metro to school . We can walk to school too . We can move some factories away from our city . We can put the rubbish in the bin . We can plant more trees . They help keep the air clean .
We have some great ideas . Let’ go !