If you don't take care of your diet, you will be ____ risk of health problems. Many countries have vaccinated their citizens ____ the flue recently Can you give me some medication ____ headaches? The students should focus ____ new lecturers or they'll fail the final exam Bob has worked properly ____ the last topic and his results are amazing! This new research will contribute ____ all humanity We blame you ____ this accident! John always carries ____ his duties properly She was ____ her last legs after the party People in large cities often suffer ____ a lack of fresh air

Unit 3 Prepositions

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