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fish
milk
give
kid
thin
pig
pick
kick
Enjoy a video
cut down trees
pick flowers
waste water
make the air dirty
should
cut down trees
waste water
pick flowers
save water
save water
earth
make the air dirty
shouldn't
Fast reaction:
We have only（仅仅）one earth.
What should we do?
We should...
We shouldn't...
距离结束还有
秒
30