指出每组单词中与其他三个不同一类的单词。
(1)A. river B. eat C. worry D. stay
(2)A. pear B. apple C. flower D. banana
(3)A. bread B. milk C. table D. egg
(4)A. one B. two C. first D. four
(5)A. tell B. say C. cook D. father
(6)A. third B. ninth C. eighth D. ten





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