用所给词的适当形式填空.Some dinosaurs ate plants and they were _____(harm).

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用所给词的适当形式填空.Some dinosaurs ate plants and they were _____(harm).
用所给词的适当形式填空.Some dinosaurs ate plants and they were _____(harm).

用所给词的适当形式填空.Some dinosaurs ate plants and they were _____(harm).
harmful 有害的

harmful

harmful

同下