Each of following sentences has one mistake. Identify and correct the mistakes.
1. Keep the cheese freshly by wrapping each one individually.
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2. What is the most important thing in really life?
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3. The river bank was covered by weed.
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4. The harder he tried the worst ha danced before the large audience.
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5. A five - thousand - dollar reward were offered for the capture of the escaped criminals.
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6. In the mid-nineteenth cantury, an Enhlishman had someone designed a Christmas card.
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7. Jack asked his boss could he have a day off.
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