С! определите в каждом из них видо-временную форму и залог глагола-сказуемого. перевести на язык. 1. about half of the water sources are polluted with inddustrial waste. 2. acid rains have been formed from the mixture of sulphur dioxide (so2) and water in the air. 3. in london,a power station burning 400,000 tons of rubbish a year,will be constructed soon. 4.today millions and millions of trees are being cut down.

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