—Why didn’t you answer my phone at 10 am?

        —I           for my decayed tooth in the clinic.

    A. treated          B. was treated          C. have been treated    D. was being treated

---Why didn’t you answer my phone at 10 am?
---I           for my decayed tooth in the clinic

1. A.
   treated
2. B.
   was treated
3. C.
   have been treated
4. D.
   was being treated

—Why didn’t you answer my phone at 10 am?

        —I           for my decayed tooth in the clinic.

    A. treated          B. was treated          C. have been treated    D. was being treated

—Why didn’t you answer my phone at 10 am?
—I           for my decayed tooth in the clinic.