If students don't study, they ______, fail, have failed, will have failed, would have failed, If you mix red and blue, you ______, make purple, have made purple, will make purple, have been making purple, If cats are scared, they _____, would have hissed, have hissed, hiss, hissed, If the sun sets, it ____ dark, became, becomes, will become, would become, If you don't brush your teeth, your breath______ bad, has smelled, will have smelled, smells, had smelled

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