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  Categorization

In Common		  
Q What is the one thing shared by all three items in the same group?
A
a cow
a shoe
a baby		 B
a doctor's office
a post office
music
C
a zipper
a shark
a comb		 D
restaurant goer
a bird
the Senate
E
a potato
a hurricane
a target		 F
a river
a person
a cave

  		 
A A. a tongue
B. a scale (or a key)
C. teeth
D. a bill
E. an eye
F. a mouth