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
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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