Her job is to detect and analyse any threat to ...

★ Word Form & Verb Tense

Her job is to detect and analyse any threat to public _____ such as floods, earthquake, and even pollution

A. safety

B. safe

C. safely

D. unsafe

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

A. rapid

B. rapidly

C. rapidity

D. rapier