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A nuclear station may take risk going off due to unexpected incidents.

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He ______ a major contribution to peace in the region.

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a _____ is a duty, responsibility, etc. that causes worry, difficulty or hard work.

Example: the heavy tax _____ on working people

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In the future, many large corporations will be wiped out and millions of jobs will be lost.

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Let's put off that meeting to next Monday.

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Domestic chores will no longer be a burden thanks to the inventions of laborsaving devices.

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They are trying to persuade the rich to__________their money to the charities.