Fill in the blank with the Spanish word that best completes the following sentence._________ corre muy rápido.

“El caballo” means “the horse,” and a horse can run very fast. So the sentence is “El caballo corre muy rápido.” “La vaca” means “the cow,” while “el pez” means “the fish”; neither fits as well. “El serpiente” is also grammatically incorrect because serpiente takes the feminine article: “la serpiente.”

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