单选题 The supervisors decide to put off ______ until they could fill the entire order.
【正确答案】 D
【答案解析】[考点] supervisor主管,上级 put off推迟,延误 shipment装运,出货
[解析] 词汇题。上级主管决定推迟装运货物,直到他们可以供应全部订货。