- Public-school education cannot be improved if tax increases specifically for education are not introduced.
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- Hyphenate the adjective and the modifier that looks like noun if not doing so might create reader confusion.
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- For developed countries, no alternative to the use of solar and wind power exists if they expect to stop being dependent on imported oil.
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- No agreement as to the assassination of John F. Kennedy will occur without definitive clarification that no "second shooter" was involved.
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- Change the color settings in the software application if not doing so might cause color distortion in the printouts.
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- For cities with high volumes of automobile traffic, no relief will ever be possible unless they put a halt to single-occupant vehicles.
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- Aristotle realized that the Earth.s shadow on the moon was never anything but round, which could not be true if the Earth was spherical.
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- The Greeks thought that the Earth could not be flat because one does not see the entire ship all at once on the horizon, but instead the sails of the ship first and then only later the hull.
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- Newton never said that the idea of gravity did not come to him when he was hit on the head by the fall of an apple.
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- Even those who realized that Newton.s theory of gravity showed that the universe could not be static did not think to suggest that it might be expanding.
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