A dog has a piece of meat in his mouth As he is walking on a bridge he looks down and sees himself .He thinks it is another dog.That dog has a piece of meat in his mouth,too.He shouts to himself Iwant to eat more eat I must get his meat Then I can have two pieces He opens his mouth to bark.His meat goes into the river
1.mouth
2.down
3.another
4,piece
5.said
6.must
7.pieces
8.opens
9.goes
依次为： mouth；down；another；piece；says；must；pieces；opens；goes
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