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ETAPA 2Adicione exercícios que você gosta aos Favoritos
Don't use any article with material nouns, if used in a general sense.
Material nouns, used in a particular sense, require the definite article: The coal from the Midlands is exported to many countries.
Don't use the indefinite article before such words as work, fun, health, permission.
Omit the definte article before common nouns in the plural if used in a general sense.
Use the definite article if nature is used in other meanings: It is in the nature of a dog to be faithful