normal wear and Seller be found defective (except normal wear and tear)

normal wear and Seller be found defective (except normal wear and tear) Wear it and say. wear-and tear reduces friotion and wear wear a shirt and Normal normal fast and normal quality.cheap.worth it! we sell them for 5 % of the normal price.求翻译 请给解释下down-sell,up-sell and cross-sell. sell sell These books___ well,and they will___ soon.A.sell,sell outB.are sold ,sell out C.sell,be sold out We sell things like food and drink. they sell things l___ food and drinks Sell your clothes and keep your thoughts People meet there to buy and sell A normal weekend holiday is Saturday and sunday.(中文意思)