读一读，找出不同类的单词。

( ) 1. A. east
( ) 2. A. museum
( ) 3. A. plane
( ) 4. A. turn right
( ) 5. A. green light B. west
B. post office
B. cinema
B. go home
B. yellow light C. ear
C. music
C. bike
C. turn left
C. red light D. north
D. library
D. bus
D. go straight
D. Christmas light