Choose the best Spanish word to complete the sentence.Los dinosaurios ________________hace mucho tiempo.

“Los dinosaurios” is a plural subject, and “hace mucho tiempo” points to the past. The preterite form of existir for a plural third-person subject is “existieron,” so the sentence means “The dinosaurs existed a long time ago.” “Existió” is singular, while “existo” and “existimos” do not match the subject.

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