When the house is on fire, the firemen let people _________ the fire.
挑出不同类的一项A.bird B. bear C. blue
挑出不同类的一项A.color B. green C. yellow
挑出不同类的一项A.look B. have C. really
挑出不同类的一项A.I B. is C. it
挑出不同类的一项A.jeep B. robot C. pig