选出下列每组单词中与其它两个不同类的一项。
( )(1)A.cheese B.water C.milk
( )(2)A.went B.watch C.met
( )(3)A.enough B.beautiful C.hour
( )(4)A.cakes B.meat C.eggs
( )(5)A.flute B.football C.basketball
( )(6)A .pen B.bag C.postcard