11. Complete the sentences using the correct tense of the verbs in brackets. 1) Unless global emissions (to be) flooded and the world economy (to collapse) (to become) 2) If only we (to use) 3) In case we (to keep on) When (to run out) 4) We (to save) 5) Pollution (to increase) (to increase) if more trees (to die) 6) If we (to try) (control) 7) Providing we (to recycle) 8) As soon as people (to share) many car fumes. 9) Until the government (to fine) stop) reduced, huge areas of land (to be) - By 2050 up to one million species extinct due to the loss of natural habitats. the water we need, we (contribute) to our planet's recovery. of oil. using more and more cars, we (to run out) other kinds of energy. of oil, we (to need) thousands of trees if we (not to waste) if we (to use) more and more trees (to die) so much paper. more oil and coal. If pollution The climate (to change) to control pollution, it (be) very expensive. Unless we too late. pollution soon, it (to be) our planet. more, we (to help) their cars to go to work, there (not to be) so those who pollute the atmosphere, some factories (to throwing waste into rivers.
про
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