（ ）, never let the shopkeeper know how much you want something.
3.When bargaining
1.When bargain
2.When you bargain
4.When you are bargaining
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2016
02-28
02-28
（ ）, never let the shopkeeper know how much you want something.
3.When bargaining
1.When bargain
2.When you bargain
4.When you are bargaining