The environment is worse than before.There is too much p_____.快!回答得好给分。

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Theenvironmentisworsethanbefore.Thereistoomuchp_____.快!回答得好给分。Theenvironmentisworsethanbefore.Therei

The environment is worse than before.There is too much p_____.快!回答得好给分。
The environment is worse than before.There is too much p_____.
快!回答得好给分。

The environment is worse than before.There is too much p_____.快!回答得好给分。
pollution
因为不可数,所以用单数