根据句意,用适当的介词填空.
1.The clothes are____sale at Xinhua Clothes Store.
2.The shoes are____only 80 yuan.
3.Thebooks in that store are_____a good price.
4.Do you have shoes_____sports?
5.Please have a look _____our store.
6.______boys,we have good T-shirts in black and blue.