选出与其他两个单词不同类的一项。
( )(1)A.aunt B.uncle C.policeman
( )(2)A.this B.that C.he
( )(3)A.handsome B.beautiful C.good
( )(4)A.teacher B.writer C.dance
( )(5)A.her B.his C.it
( )(6)A.on B.in C.a