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Ninety-six point five percent of the water on the earth ______ sea water.
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Tom and Tony        good friends.
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The day before yesterday the police including one officer ____ searching for the murder in that mountain.
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A large number of people ______present at the meeting yesterday afternoon.  
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The number of people invited ______ fifty, but a number of them ______absent for different reasons
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The company used 50 percent of the raw materials, the rest of which __________ sent to other cities to help the factories there.
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