Animal's language
      We see animals, like rabbits, bees, dogs, birds,    1    …, but do you know how these animals 
   2    things? First, let's see a rabbit. When a rabbit sees something    3    , it runs away at once.
When it runs, its tail    4   up and down. When others see this, they run away, too.
      Many other animals use this kind of way. When a bee finds some food, it goes back to    5  
home. It can't tell the    6    bees where the food is by speaking to them, but it does a little
dance in the air. This may    7    other bees where the food is.
      Some animals say things by    8    sounds like a man does. For example, a dog barks when a
   9    comes near. Some birds can make several different sounds, each with its own    10   . In
a word, every animal has its own language.
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