1 . Blue whales are the largest ________ (create) ever to have lived. (所给词的适当形式填空)
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2 . As we all know, Pandas are precious ________ (生物). (根据汉语提示单词拼写)
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3 . You can refer to any living thing that is not a plant as a __________ (生物), especially when it is of an unknown or unfamiliar kind. People also refer to imaginary animals and beings as __________ (生物). (根据汉语提示填空)
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