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1 . When rescue personnel arrived, the two ________ (freeze) to death. (所给词的适当形式填空)
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2 . The________ (freeze) point of alcohol is much lower than that of water. (所给词的适当形式填空)
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3 . Your hands will________ (冻住) doing this. (根据汉语提示单词拼写)
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