---Look at the machine in the corner. I haven’t seen it before. ---It ________ examining the patient...
2023-01-10 15:10:57 20次 2014-2015学年浙江富阳新登中学九年级1月单元问卷英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
---Look at the machine in the corner. I haven’t seen it before.
---It ________ examining the patient.
A. used to B. used for
C. is used to D. is used for
本题链接：
