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_____________ gene in the human genome were more completely understood, many human diseases could be cured or prevented.

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He was so mean that he could not bear to ___ the smallest sum of money for the charity appeal.

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Too many factories dispose ___ their waste by pumping it into rivers and the sea.

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The ___________ polluted atmosphere in some industrial regions is called “smog”.

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The child who was caught ___________ was made to stand in the comer of the classroom.

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Woman liberated from child care can pursue their own interest.

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Excessive amounts of lead in the air can decrease a child’s intelligence.

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Unlike the other Asian states, Singapore has hardly any raw materials, _________