start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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essential = significant = crucial
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start learning
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zanieczyszczone zaopatrzenie start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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reduce the number = decrease
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start learning
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start learning
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to donate = to make donations
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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to collect funds = raise money
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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be aware of =be conscious of
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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start learning
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