the verb be

is the underlined verb in the sentences correct?

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it were fierce meat-eater

• are

• was

• correct as it is

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all dinosaurs is extinct

• are

• am

• correct as is

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a brontosaurus is a kind of dinosaur

• am

• are

• correct as it is

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dinosaurs was like some deep reptiles that live today

• is

• were

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many people are puzzled about what happened to dinosaurs

• am

• was

• correct as it is

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their teeth, bones, and skin was like those of crocodiles

• were

• is

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Dinosaurs was plant-eaters or meat-eaters

• is

• were

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large Dinosaurs were the largest land animals that ever lived

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• was

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I are interested in Tyrannosaurus rex

• am

• were

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I are amazed by the extraordinary size!

• am

• were

• correct as it is