【题目】The big box ________ on and I ________ on it.
A. is used to sitting; am used to sitting B. is used to sit; am used to sit
C. is used to sitting; am used to sit D. is used to sit; am used to sitting
在线课程【答案】D
【解析】
考查固定搭配。句意：这个大盒子是用来坐的，我习惯坐在上面。固定搭配：be used to do sth.被用来做某事；be used to doing sth.习惯做某事，故选D。