选出下列每组单词中不同类的一项。
(_____)1. A. where B. white C. when D. how
(_____)2. A. evening B. morning C. afternoon D. skiing
(_____)3. A. usually B. football C. skiing D. basketball
(_____)4. A. sport B. do C. music D. picture
(_____)5. A. worker B. brother C. father D. sister