1 . Doctors are understandably ________ (caution) about this new treatment. (所给词的适当形式填空)
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2 . The boss is____________ (caution)about making promises. (用单词的适当形式完成句子)
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3 . The __________ teacher gave Tom a __________ and told him never to do it again. (caution) (所给词的适当形式填空)
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