1、We are trying our best to save the earth.
2、There is no scientific research proving that shark's fin is good for health.
3、It was regarded as the biggest cleanning program that I attended before.
4、We can ride or walk to school and workplace instead of driving.
5、We can wait any more but to take actions right now.
6、I think it is helpful to go shopping with a shopping bag,which is within my ability.
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