But now, when I go back to my hometown find that the environment has been polluted badly.
The traffic gets congested during the working hours and the air is polluted badly.
It is known to all that today the environment has been badly polluted.
Unlike the city, as the air is polluted and the buildings are high, so people can't see the moon clearly.
In the city, there are so many building that they cover people's eyesight, what's more, the environment is polluted so heavy that the sky is grey.
The computer answered,'Humans polluted Earth.
We polluted Earth and so killed all the animals.
But people polluted Earth.
