Select the four adjectives. Don't select any articles (a, an, or the). Between 1899 and 1905, Orville and Wilbur Wright carried out aeronautical research that
finally culminated in a flight-worthy design. Since then, all airplanes have included
aspects of that design.

The adjectives in this sentence are;

An adjective is a word that describes or qualifies a noun, pronoun, or noun phrase. The adjectives in the sentence are aeronautical and fight-worthy.

Aeronautical provides a description of the noun, research. It tells us the type of research being carried out. Thus, we know that the research deals with aircraft.

Flight-worthy is another adjective in the sentence. It qualifies the noun, design. Therefore, we learn that the design that was produced can be used for flight purposes.

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