找出下列单词中不同类的一项，填在题前的括号内。
(1)A. music       B. science       C. teacher
(2)A. polite     B. shy           C. like
(3)A. Chinese     B. hard-working  C. English
(4)A. clever      B. young         C. candy
(5)A. is         B. are           C. no