单选题 If you try to sell them something that they ______ for free, they aren't going to buy it.
A. used to getting B. used to get C. were used to get D. are used to get

【正确答案】 B
【答案解析】used to可看作一个半助动词或情态动词,其后接动词原形,表示过去的习惯或经常发生的动作。be used to=get used to,都是固定结构,意思是“习惯于某事或做某事”, to为介词,后接名词或动名词,不能接动词原形。“be used to+v.”或“be used as/for+ n.”表示某东西被用来做某事或被当作什么东西采使用,都是被动语态结构。