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Study
GE.1. Unit 2AB
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making air, water, soil, etc.. dirty
pollution
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an action against law.
Crime
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usual, happening often.
Common
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stop doing something halfway
give up
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a period when you are not working
free time
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something that can create a problem
Disadvantage
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physical activity that keeps you fit.
Exercise
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a person who study or investigate something scientifically
Researcher
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almost the same.
Similar
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strong and well, not sick.
Healthy
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