Pessimists point out that both global warming and pollution have ...

★ Word Form & Verb Tense

Pessimists point out that both global warming and pollution have increased _____ over the past twenty years

A. rapid

B. rapidly

C. rapidity

D. rapier

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_____ there is no shortage of fresh water, wastewater is treated and turned into drinking water

A. ensure

B. to ensure

C. ensured

D. ensuring