请找出每个小题中不属于同一类的选项,并将字母标号填写在题前括号内。
( )(1)A. Social Studies B. homework C. Moral Education D. P. E.
( )(2)A. young B. short C. quiet D. thin
( )(3)A. fruit B. grape C. apple D. orange
( )(4)A. mountain B. sky C. air D. healthy
( )(5)A. closet B. path C. mirror D. end table