选出每组单词中不同类的一项。
(_____)1. A. chair B. behind C. bed
(_____)2. A. on B. in C. tree
(_____)3. A. bag B. pencil C. front
(_____)4. A. tall B. short C. child
(_____)5. A. other B. head C. eye
(_____)6. A. under B. fruit C. beside
(_____)7. A. beside B. behind C. village
(_____)8. A. horse B. fox C. back