You are not supposed to duplicate or sell any of our designs to

You are not supposed to duplicate or sell any of our designs to any other customers __________ ourwritten approval.
【正确答案】：without
【题目解析】：[解析]句意：未经我们书面同意贵公司不许生产复制品或者将图案卖给其他客户。without表示“缺乏， 没有”。