Kitty and Ben have twelve yuan. Now they are in the supermarket.The supermarket is very big.They can see food , fruit, flowers and clothes in it. Kitty and Ben are very hungry. They buy two packets of biscuits. They’re eight yuan. Kitty is thirsty too. A big bottle of water is six yuan. A small bottle of water is three yuan.Which one can she buy?
（1）Where are Kitty and Ben?
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