There is a duck in front of two ducks.There is a duck betwee
There is a duck in front of two ducks.There is a duck between two ducks.
There is a duck in front of two ducks.
There is a duck between two ducks.
There is a duck behind two ducks.
How many ducks are there?
聪明的算出了吗?There are（）
There is a duck in front of two ducks.
There is a duck between two ducks.
There is a duck behind two ducks.
How many ducks are there?
聪明的算出了吗?There are（）
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