填空题

51. You call its meat pork.

• [A] dog
  52. You grow plants in it.
• [B] water
  53. You ride it or use it to pull things.
• [C] cat
  54. You wash your hands with it.
• [D] earth
  55. You keep it to watch your house.
• [E] air
• [F] horse
• [G] pig

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